264637 has 2 divisors, whose sum is σ = 264638. Its totient is φ = 264636.

The previous prime is 264631. The next prime is 264643. The reversal of 264637 is 736462.

It is a balanced prime because it is at equal distance from previous prime (264631) and next prime (264643).

It can be written as a sum of positive squares in only one way, i.e., 264196 + 441 = 514^2 + 21^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264637 is a prime.

264637 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132318 + 132319.

It is an arithmetic number, because the mean of its divisors is an integer number (132319).

2²⁶⁴⁶³⁷ is an apocalyptic number.

It is an amenable number.

264637 is a deficient number, since it is larger than the sum of its proper divisors (1).

264637 is an equidigital number, since it uses as much as digits as its factorization.

264637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 264637 is about 514.4288094576. The cubic root of 264637 is about 64.2022411008.

The spelling of 264637 in words is "two hundred sixty-four thousand, six hundred thirty-seven".