74420644 has 12 divisors (see below), whose sum is σ = 137090800. Its totient is φ = 35251848.

The previous prime is 74420623. The next prime is 74420683. The reversal of 74420644 is 44602447.

74420644 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

74420644 is strictly pandigital in base 9.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489534 + ... + 489685.

Almost surely, 2^74420644 is an apocalyptic number.

It is an amenable number.

74420644 is a deficient number, since it is larger than the sum of its proper divisors (62670156).

74420644 is a wasteful number, since it uses less digits than its factorization.

74420644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979242 (or 979240 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 74420644 is about 8626.7400563596. The cubic root of 74420644 is about 420.6276405849.

The spelling of 74420644 in words is "seventy-four million, four hundred twenty thousand, six hundred forty-four".