64712057 has 4 divisors (see below), whose sum is σ = 64728996. Its totient is φ = 64695120.

The previous prime is 64712023. The next prime is 64712059. The reversal of 64712057 is 75021746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31315216 + 33396841 = 5596^2 + 5779^2 .

It is a cyclic number.

It is not a de Polignac number, because 64712057 - 2²⁴ = 47934841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64712059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (16182249).

Almost surely, 2^64712057 is an apocalyptic number.

It is an amenable number.

64712057 is a deficient number, since it is larger than the sum of its proper divisors (16939).

64712057 is a wasteful number, since it uses less digits than its factorization.

64712057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 64712057 is about 8044.3804609180. The cubic root of 64712057 is about 401.4779842635.

The spelling of 64712057 in words is "sixty-four million, seven hundred twelve thousand, fifty-seven".