264533657 has 2 divisors, whose sum is σ = 264533658. Its totient is φ = 264533656.

The previous prime is 264533629. The next prime is 264533747. The reversal of 264533657 is 756335462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209120521 + 55413136 = 14461^2 + 7444^2 .

It is a cyclic number.

It is not a de Polignac number, because 264533657 - 2¹⁶ = 264468121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264533627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132266828 + 132266829.

It is an arithmetic number, because the mean of its divisors is an integer number (132266829).

Almost surely, 2^264533657 is an apocalyptic number.

It is an amenable number.

264533657 is a deficient number, since it is larger than the sum of its proper divisors (1).

264533657 is an equidigital number, since it uses as much as digits as its factorization.

264533657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 41.

The square root of 264533657 is about 16264.4906775466. The cubic root of 264533657 is about 641.9388283897.

The spelling of 264533657 in words is "two hundred sixty-four million, five hundred thirty-three thousand, six hundred fifty-seven".