74090646 has 48 divisors (see below), whose sum is σ = 191533680. Its totient is φ = 21168000.

The previous prime is 74090629. The next prime is 74090669. The reversal of 74090646 is 64609047.

74090646 is a `hidden beast` number, since 7 + 4 + 0 + 9 + 0 + 646 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 74090646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11355 + ... + 16646.

It is an arithmetic number, because the mean of its divisors is an integer number (3990285).

Almost surely, 2^74090646 is an apocalyptic number.

74090646 is an abundant number, since it is smaller than the sum of its proper divisors (117443034).

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

74090646 is a wasteful number, since it uses less digits than its factorization.

74090646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28026 (or 28013 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 74090646 is about 8607.5923462952. The cubic root of 74090646 is about 420.0049999405.

The spelling of 74090646 in words is "seventy-four million, ninety thousand, six hundred forty-six".