674309520 has 120 divisors (see below), whose sum is σ = 2337683712. Its totient is φ = 174009600.

The previous prime is 674309491. The next prime is 674309543. The reversal of 674309520 is 25903476.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7215 + ... + 37425.

Almost surely, 2^674309520 is an apocalyptic number.

674309520 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 674309520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168841856).

674309520 is an abundant number, since it is smaller than the sum of its proper divisors (1663374192).

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

674309520 is a wasteful number, since it uses less digits than its factorization.

674309520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30261 (or 30252 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 674309520 is about 25967.4704197386. The cubic root of 674309520 is about 876.9061118957.

The spelling of 674309520 in words is "six hundred seventy-four million, three hundred nine thousand, five hundred twenty".