74611644 has 12 divisors (see below), whose sum is σ = 174093864. Its totient is φ = 24870544.

The previous prime is 74611633. The next prime is 74611679. The reversal of 74611644 is 44611647.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108807 + ... + 3108830.

It is an arithmetic number, because the mean of its divisors is an integer number (14507822).

Almost surely, 2^74611644 is an apocalyptic number.

It is an amenable number.

74611644 is an abundant number, since it is smaller than the sum of its proper divisors (99482220).

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

74611644 is a wasteful number, since it uses less digits than its factorization.

74611644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217644 (or 6217642 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 74611644 is about 8637.8031929421. The cubic root of 74611644 is about 420.9871790244.

The spelling of 74611644 in words is "seventy-four million, six hundred eleven thousand, six hundred forty-four".