74307644 has 12 divisors (see below), whose sum is σ = 130261824. Its totient is φ = 37089984.

The previous prime is 74307631. The next prime is 74307647. The reversal of 74307644 is 44670347.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74307647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13292 + ... + 18035.

It is an arithmetic number, because the mean of its divisors is an integer number (10855152).

Almost surely, 2^74307644 is an apocalyptic number.

It is an amenable number.

74307644 is a deficient number, since it is larger than the sum of its proper divisors (55954180).

74307644 is a wasteful number, since it uses less digits than its factorization.

74307644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31924 (or 31922 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 74307644 is about 8620.1881649996. The cubic root of 74307644 is about 420.4146396483.

The spelling of 74307644 in words is "seventy-four million, three hundred seven thousand, six hundred forty-four".