74656 has 12 divisors (see below), whose sum is σ = 147042. Its totient is φ = 37312.

The previous prime is 74653. The next prime is 74687. The reversal of 74656 is 65647.

It can be written as a sum of positive squares in only one way, i.e., 67600 + 7056 = 260^2 + 84^2 .

It is an Ulam number.

It is a plaindrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (74653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135 + ... + 1198.

2⁷⁴⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

74656 is a deficient number, since it is larger than the sum of its proper divisors (72386).

74656 is a wasteful number, since it uses less digits than its factorization.

74656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2335 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 74656 is about 273.2325017270. The cubic root of 74656 is about 42.1070586954.

Subtracting from 74656 its reverse (65647), we obtain a palindrome (9009).

The spelling of 74656 in words is "seventy-four thousand, six hundred fifty-six".