657134069 has 2 divisors, whose sum is σ = 657134070. Its totient is φ = 657134068.

The previous prime is 657134053. The next prime is 657134111. The reversal of 657134069 is 960431756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 656896900 + 237169 = 25630^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 657134069 - 2⁴ = 657134053 is a prime.

It is a super-2 number, since 2×657134069² = 863650369280993522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657134669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328567034 + 328567035.

It is an arithmetic number, because the mean of its divisors is an integer number (328567035).

Almost surely, 2^657134069 is an apocalyptic number.

It is an amenable number.

657134069 is a deficient number, since it is larger than the sum of its proper divisors (1).

657134069 is an equidigital number, since it uses as much as digits as its factorization.

657134069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 657134069 is about 25634.6263674741. The cubic root of 657134069 is about 869.3967143616.

The spelling of 657134069 in words is "six hundred fifty-seven million, one hundred thirty-four thousand, sixty-nine".