268564 has 6 divisors (see below), whose sum is σ = 469994. Its totient is φ = 134280.

The previous prime is 268547. The next prime is 268573. The reversal of 268564 is 465862.

268564 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in only one way, i.e., 260100 + 8464 = 510^2 + 92^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33567 + ... + 33574.

2²⁶⁸⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

268564 is a deficient number, since it is larger than the sum of its proper divisors (201430).

268564 is a wasteful number, since it uses less digits than its factorization.

268564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67145 (or 67143 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 268564 is about 518.2316084532. The cubic root of 268564 is about 64.5182529516.

The spelling of 268564 in words is "two hundred sixty-eight thousand, five hundred sixty-four".