64593857 has 2 divisors, whose sum is σ = 64593858. Its totient is φ = 64593856.

The previous prime is 64593853. The next prime is 64593887. The reversal of 64593857 is 75839546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63425296 + 1168561 = 7964^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 64593857 - 2² = 64593853 is a prime.

It is not a weakly prime, because it can be changed into another prime (64593853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32296928 + 32296929.

It is an arithmetic number, because the mean of its divisors is an integer number (32296929).

Almost surely, 2^64593857 is an apocalyptic number.

It is an amenable number.

64593857 is a deficient number, since it is larger than the sum of its proper divisors (1).

64593857 is an equidigital number, since it uses as much as digits as its factorization.

64593857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The square root of 64593857 is about 8037.0303595296. The cubic root of 64593857 is about 401.2333950162.

The spelling of 64593857 in words is "sixty-four million, five hundred ninety-three thousand, eight hundred fifty-seven".