264657983 has 2 divisors, whose sum is σ = 264657984. Its totient is φ = 264657982.

The previous prime is 264657971. The next prime is 264658007. The reversal of 264657983 is 389756462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264657983 - 2⁶ = 264657919 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264656983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132328991 + 132328992.

It is an arithmetic number, because the mean of its divisors is an integer number (132328992).

Almost surely, 2^264657983 is an apocalyptic number.

264657983 is a deficient number, since it is larger than the sum of its proper divisors (1).

264657983 is an equidigital number, since it uses as much as digits as its factorization.

264657983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 264657983 is about 16268.3122357545. The cubic root of 264657983 is about 642.0393791575.

The spelling of 264657983 in words is "two hundred sixty-four million, six hundred fifty-seven thousand, nine hundred eighty-three".