64656063 has 10 divisors (see below), whose sum is σ = 96585104. Its totient is φ = 43103988.

The previous prime is 64656041. The next prime is 64656073. The reversal of 64656063 is 36065646.

64656063 is a `hidden beast` number, since 6 + 46 + 5 + 606 + 3 = 666.

It is not a de Polignac number, because 64656063 - 2⁶ = 64655999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64656023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 399031 + ... + 399192.

Almost surely, 2^64656063 is an apocalyptic number.

64656063 is a deficient number, since it is larger than the sum of its proper divisors (31929041).

64656063 is an equidigital number, since it uses as much as digits as its factorization.

64656063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798235 (or 798226 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 64656063 is about 8040.8993899936. The cubic root of 64656063 is about 401.3621539924.

The spelling of 64656063 in words is "sixty-four million, six hundred fifty-six thousand, sixty-three".