674565408 has 240 divisors, whose sum is σ = 2206401120. Its totient is φ = 200448000.

The previous prime is 674565401. The next prime is 674565431. The reversal of 674565408 is 804565476.

674565408 is a `hidden beast` number, since 67 + 45 + 6 + 540 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (674565401) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1682008 + ... + 1682408.

It is an arithmetic number, because the mean of its divisors is an integer number (9193338).

Almost surely, 2^674565408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674565408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103200560).

674565408 is an abundant number, since it is smaller than the sum of its proper divisors (1531835712).

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

674565408 is a wasteful number, since it uses less digits than its factorization.

674565408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 674565408 is about 25972.3970399345. The cubic root of 674565408 is about 877.0170210882.

The spelling of 674565408 in words is "six hundred seventy-four million, five hundred sixty-five thousand, four hundred eight".