674591040 has 336 divisors, whose sum is σ = 2471348880. Its totient is φ = 168591360.

The previous prime is 674591017. The next prime is 674591063. The reversal of 674591040 is 40195476.

674591040 is a `hidden beast` number, since 67 + 4 + 591 + 0 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (674591017) and next prime (674591063).

It can be written as a sum of positive squares in 8 ways, for example, as 254016 + 674337024 = 504^2 + 25968^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 674590986 and 674591004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3424222 + ... + 3424418.

It is an arithmetic number, because the mean of its divisors is an integer number (7355205).

Almost surely, 2^674591040 is an apocalyptic number.

674591040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674591040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235674440).

674591040 is an abundant number, since it is smaller than the sum of its proper divisors (1796757840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

674591040 is a wasteful number, since it uses less digits than its factorization.

674591040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 674591040 is about 25972.8904821932. The cubic root of 674591040 is about 877.0281291860.

The spelling of 674591040 in words is "six hundred seventy-four million, five hundred ninety-one thousand, forty".