256612 has 6 divisors (see below), whose sum is σ = 449078. Its totient is φ = 128304.

The previous prime is 256609. The next prime is 256639. The reversal of 256612 is 216652.

It can be written as a sum of positive squares in only one way, i.e., 256036 + 576 = 506^2 + 24^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256612.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32073 + ... + 32080.

2²⁵⁶⁶¹² is an apocalyptic number.

It is an amenable number.

256612 is a deficient number, since it is larger than the sum of its proper divisors (192466).

256612 is a wasteful number, since it uses less digits than its factorization.

256612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64157 (or 64155 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 256612 is about 506.5688502070. The cubic root of 256612 is about 63.5466002201.

It can be divided in two parts, 256 and 612, that added together give a palindrome (868).

The spelling of 256612 in words is "two hundred fifty-six thousand, six hundred twelve".