64563518 has 16 divisors (see below), whose sum is σ = 103083840. Its totient is φ = 30222336.

The previous prime is 64563517. The next prime is 64563529. The reversal of 64563518 is 81536546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64563517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1643 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (6442740).

Almost surely, 2^64563518 is an apocalyptic number.

64563518 is a deficient number, since it is larger than the sum of its proper divisors (38520322).

64563518 is a wasteful number, since it uses less digits than its factorization.

64563518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051.

The product of its digits is 86400, while the sum is 38.

The square root of 64563518 is about 8035.1426869720. The cubic root of 64563518 is about 401.1705669245.

The spelling of 64563518 in words is "sixty-four million, five hundred sixty-three thousand, five hundred eighteen".