64576563 has 8 divisors (see below), whose sum is σ = 86489088. Its totient is φ = 42857544.

The previous prime is 64576549. The next prime is 64576597. The reversal of 64576563 is 36567546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64576563 - 2⁹ = 64576051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64576513) 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, 47595 + ... + 48932.

It is an arithmetic number, because the mean of its divisors is an integer number (10811136).

Almost surely, 2^64576563 is an apocalyptic number.

64576563 is a deficient number, since it is larger than the sum of its proper divisors (21912525).

64576563 is a wasteful number, since it uses less digits than its factorization.

64576563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96753.

The product of its digits is 453600, while the sum is 42.

The square root of 64576563 is about 8035.9543926033. The cubic root of 64576563 is about 401.1975838208.

The spelling of 64576563 in words is "sixty-four million, five hundred seventy-six thousand, five hundred sixty-three".