74379644 has 12 divisors (see below), whose sum is σ = 130263168. Its totient is φ = 37161600.

The previous prime is 74379593. The next prime is 74379647. The reversal of 74379644 is 44697347.

It is a junction number, because it is equal to n+sod(n) for n = 74379595 and 74379604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74379647) 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, 437 + ... + 12204.

It is an arithmetic number, because the mean of its divisors is an integer number (10855264).

Almost surely, 2^74379644 is an apocalyptic number.

It is an amenable number.

74379644 is a deficient number, since it is larger than the sum of its proper divisors (55883524).

74379644 is a wasteful number, since it uses less digits than its factorization.

74379644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14116 (or 14114 counting only the distinct ones).

The product of its digits is 508032, while the sum is 44.

The square root of 74379644 is about 8624.3633967963. The cubic root of 74379644 is about 420.5503819986.

The spelling of 74379644 in words is "seventy-four million, three hundred seventy-nine thousand, six hundred forty-four".