674435520 has 336 divisors, whose sum is σ = 2579522400. Its totient is φ = 160358400.

The previous prime is 674435497. The next prime is 674435551. The reversal of 674435520 is 25534476.

674435520 is a `hidden beast` number, since 67 + 4 + 43 + 552 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1932306 + ... + 1932654.

It is an arithmetic number, because the mean of its divisors is an integer number (7677150).

Almost surely, 2^674435520 is an apocalyptic number.

674435520 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 674435520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289761200).

674435520 is an abundant number, since it is smaller than the sum of its proper divisors (1905086880).

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

674435520 is a wasteful number, since it uses less digits than its factorization.

674435520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 674435520 is about 25969.8964187384. The cubic root of 674435520 is about 876.9607274125.

Adding to 674435520 its reverse (25534476), we get a palindrome (699969996).

The spelling of 674435520 in words is "six hundred seventy-four million, four hundred thirty-five thousand, five hundred twenty".