63638364 has 24 divisors (see below), whose sum is σ = 148771728. Its totient is φ = 21172480.

The previous prime is 63638363. The next prime is 63638387. The reversal of 63638364 is 46383636.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63638363) 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, 1924 + ... + 11444.

It is an arithmetic number, because the mean of its divisors is an integer number (6198822).

Almost surely, 2^63638364 is an apocalyptic number.

It is an amenable number.

63638364 is an abundant number, since it is smaller than the sum of its proper divisors (85133364).

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

63638364 is a wasteful number, since it uses less digits than its factorization.

63638364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10085 (or 10083 counting only the distinct ones).

The product of its digits is 186624, while the sum is 39.

The square root of 63638364 is about 7977.3657306156. The cubic root of 63638364 is about 399.2451681348.

The spelling of 63638364 in words is "sixty-three million, six hundred thirty-eight thousand, three hundred sixty-four".