64812057 has 12 divisors (see below), whose sum is σ = 88088784. Its totient is φ = 42387280.

The previous prime is 64812023. The next prime is 64812067. The reversal of 64812057 is 75021846.

It is not a de Polignac number, because 64812057 - 2⁶ = 64811993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64812067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4582 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (7340732).

Almost surely, 2^64812057 is an apocalyptic number.

It is an amenable number.

64812057 is a deficient number, since it is larger than the sum of its proper divisors (23276727).

64812057 is an equidigital number, since it uses as much as digits as its factorization.

64812057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800 (or 7747 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 64812057 is about 8050.5935806001. The cubic root of 64812057 is about 401.6846800880.

The spelling of 64812057 in words is "sixty-four million, eight hundred twelve thousand, fifty-seven".