64636463 has 16 divisors (see below), whose sum is σ = 69114816. Its totient is φ = 60318720.

The previous prime is 64636427. The next prime is 64636469. The reversal of 64636463 is 36463646.

It is a cyclic number.

It is not a de Polignac number, because 64636463 - 2⁶ = 64636399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64636469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229883 + ... + 230163.

It is an arithmetic number, because the mean of its divisors is an integer number (4319676).

Almost surely, 2^64636463 is an apocalyptic number.

64636463 is a deficient number, since it is larger than the sum of its proper divisors (4478353).

64636463 is a wasteful number, since it uses less digits than its factorization.

64636463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514.

The product of its digits is 186624, while the sum is 38.

The square root of 64636463 is about 8039.6805284787. The cubic root of 64636463 is about 401.3215932525.

The spelling of 64636463 in words is "sixty-four million, six hundred thirty-six thousand, four hundred sixty-three".