674452440 has 128 divisors (see below), whose sum is σ = 2253888000. Its totient is φ = 179397504.

The previous prime is 674452409. The next prime is 674452459. The reversal of 674452440 is 44254476.

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 = 674452395 and 674452404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784731 + ... + 785589.

It is an arithmetic number, because the mean of its divisors is an integer number (17608500).

Almost surely, 2^674452440 is an apocalyptic number.

674452440 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 674452440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126944000).

674452440 is an abundant number, since it is smaller than the sum of its proper divisors (1579435560).

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

674452440 is a wasteful number, since it uses less digits than its factorization.

674452440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The square root of 674452440 is about 25970.2221784874. Note that the first 3 decimals coincide. The cubic root of 674452440 is about 876.9680609781.

The spelling of 674452440 in words is "six hundred seventy-four million, four hundred fifty-two thousand, four hundred forty".