674891520 has 72 divisors (see below), whose sum is σ = 2155447056. Its totient is φ = 179970048.

The previous prime is 674891519. The next prime is 674891527. The reversal of 674891520 is 25198476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674891527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84037 + ... + 91716.

Almost surely, 2^674891520 is an apocalyptic number.

674891520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

674891520 is an abundant number, since it is smaller than the sum of its proper divisors (1480555536).

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

674891520 is a wasteful number, since it uses less digits than its factorization.

674891520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175777 (or 175763 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 674891520 is about 25978.6743310739. The cubic root of 674891520 is about 877.1583267323.

The spelling of 674891520 in words is "six hundred seventy-four million, eight hundred ninety-one thousand, five hundred twenty".