264031643 has 2 divisors, whose sum is σ = 264031644. Its totient is φ = 264031642.

The previous prime is 264031627. The next prime is 264031661. The reversal of 264031643 is 346130462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264031643 - 2⁴ = 264031627 is a prime.

It is not a weakly prime, because it can be changed into another prime (264031693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132015821 + 132015822.

It is an arithmetic number, because the mean of its divisors is an integer number (132015822).

Almost surely, 2^264031643 is an apocalyptic number.

264031643 is a deficient number, since it is larger than the sum of its proper divisors (1).

264031643 is an equidigital number, since it uses as much as digits as its factorization.

264031643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 264031643 is about 16249.0505261077. The cubic root of 264031643 is about 641.5324952805.

The spelling of 264031643 in words is "two hundred sixty-four million, thirty-one thousand, six hundred forty-three".