74491644 has 24 divisors (see below), whose sum is σ = 174112848. Its totient is φ = 24787840.

The previous prime is 74491597. The next prime is 74491657. The reversal of 74491644 is 44619447.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374 + ... + 12434.

It is an arithmetic number, because the mean of its divisors is an integer number (7254702).

Almost surely, 2^74491644 is an apocalyptic number.

It is an amenable number.

74491644 is an abundant number, since it is smaller than the sum of its proper divisors (99621204).

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

74491644 is a wasteful number, since it uses less digits than its factorization.

74491644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685 (or 10683 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 74491644 is about 8630.8541871590. The cubic root of 74491644 is about 420.7613627558.

The spelling of 74491644 in words is "seventy-four million, four hundred ninety-one thousand, six hundred forty-four".