63986164 has 48 divisors (see below), whose sum is σ = 130527936. Its totient is φ = 27123200.

The previous prime is 63986159. The next prime is 63986171. The reversal of 63986164 is 46168936.

It is a self number, because there is not a number n which added to its sum of digits gives 63986164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97662 + ... + 98314.

It is an arithmetic number, because the mean of its divisors is an integer number (2719332).

Almost surely, 2^63986164 is an apocalyptic number.

It is an amenable number.

63986164 is an abundant number, since it is smaller than the sum of its proper divisors (66541772).

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

63986164 is a wasteful number, since it uses less digits than its factorization.

63986164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 814 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 63986164 is about 7999.1352032579. The cubic root of 63986164 is about 399.9711729225.

The spelling of 63986164 in words is "sixty-three million, nine hundred eighty-six thousand, one hundred sixty-four".