64513357 has 2 divisors, whose sum is σ = 64513358. Its totient is φ = 64513356.

The previous prime is 64513343. The next prime is 64513381. The reversal of 64513357 is 75331546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62948356 + 1565001 = 7934^2 + 1251^2 .

It is a cyclic number.

It is not a de Polignac number, because 64513357 - 2²³ = 56124749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64313357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32256678 + 32256679.

It is an arithmetic number, because the mean of its divisors is an integer number (32256679).

Almost surely, 2^64513357 is an apocalyptic number.

It is an amenable number.

64513357 is a deficient number, since it is larger than the sum of its proper divisors (1).

64513357 is an equidigital number, since it uses as much as digits as its factorization.

64513357 is an evil number, because the sum of its binary digits is even.

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

The square root of 64513357 is about 8032.0207295549. The cubic root of 64513357 is about 401.0666468828.

The spelling of 64513357 in words is "sixty-four million, five hundred thirteen thousand, three hundred fifty-seven".