63573664 has 48 divisors (see below), whose sum is σ = 156050496. Its totient is φ = 24768000.

The previous prime is 63573649. The next prime is 63573691. The reversal of 63573664 is 46637536.

It is a super-2 number, since 2×63573664² = 8083221508769792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10437 + ... + 15364.

It is an arithmetic number, because the mean of its divisors is an integer number (3251052).

Almost surely, 2^63573664 is an apocalyptic number.

It is an amenable number.

63573664 is an abundant number, since it is smaller than the sum of its proper divisors (92476832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63573664 is a wasteful number, since it uses less digits than its factorization.

63573664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25829 (or 25821 counting only the distinct ones).

The product of its digits is 272160, while the sum is 40.

The square root of 63573664 is about 7973.3094759955. The cubic root of 63573664 is about 399.1098204204.

The spelling of 63573664 in words is "sixty-three million, five hundred seventy-three thousand, six hundred sixty-four".