264538633 has 2 divisors, whose sum is σ = 264538634. Its totient is φ = 264538632.

The previous prime is 264538627. The next prime is 264538657. The reversal of 264538633 is 336835462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224190729 + 40347904 = 14973^2 + 6352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264538633 is a prime.

It is not a weakly prime, because it can be changed into another prime (264538693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132269316 + 132269317.

It is an arithmetic number, because the mean of its divisors is an integer number (132269317).

Almost surely, 2^264538633 is an apocalyptic number.

It is an amenable number.

264538633 is a deficient number, since it is larger than the sum of its proper divisors (1).

264538633 is an equidigital number, since it uses as much as digits as its factorization.

264538633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 40.

The square root of 264538633 is about 16264.6436481098. The cubic root of 264538633 is about 641.9428534195.

The spelling of 264538633 in words is "two hundred sixty-four million, five hundred thirty-eight thousand, six hundred thirty-three".