65657057 has 2 divisors, whose sum is σ = 65657058. Its totient is φ = 65657056.

The previous prime is 65657047. The next prime is 65657063. The reversal of 65657057 is 75075656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37258816 + 28398241 = 6104^2 + 5329^2 .

It is a cyclic number.

It is not a de Polignac number, because 65657057 - 2²⁴ = 48879841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65657017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32828528 + 32828529.

It is an arithmetic number, because the mean of its divisors is an integer number (32828529).

Almost surely, 2^65657057 is an apocalyptic number.

It is an amenable number.

65657057 is a deficient number, since it is larger than the sum of its proper divisors (1).

65657057 is an equidigital number, since it uses as much as digits as its factorization.

65657057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 65657057 is about 8102.9042324342. The cubic root of 65657057 is about 403.4228291412.

The spelling of 65657057 in words is "sixty-five million, six hundred fifty-seven thousand, fifty-seven".