657065023 has 2 divisors, whose sum is σ = 657065024. Its totient is φ = 657065022.

The previous prime is 657064997. The next prime is 657065053. The reversal of 657065023 is 320560756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 657065023 - 2¹⁷ = 656933951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 657065023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657065053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328532511 + 328532512.

It is an arithmetic number, because the mean of its divisors is an integer number (328532512).

Almost surely, 2^657065023 is an apocalyptic number.

657065023 is a deficient number, since it is larger than the sum of its proper divisors (1).

657065023 is an equidigital number, since it uses as much as digits as its factorization.

657065023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 657065023 is about 25633.2795989901. The cubic root of 657065023 is about 869.3662637169.

The spelling of 657065023 in words is "six hundred fifty-seven million, sixty-five thousand, twenty-three".