63968536 has 16 divisors (see below), whose sum is σ = 120027600. Its totient is φ = 31961184.

The previous prime is 63968521. The next prime is 63968537. The reversal of 63968536 is 63586936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63968537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16741 + ... + 20203.

It is an arithmetic number, because the mean of its divisors is an integer number (7501725).

Almost surely, 2^63968536 is an apocalyptic number.

63968536 is the 4618-th octagonal number.

It is an amenable number.

63968536 is a deficient number, since it is larger than the sum of its proper divisors (56059064).

63968536 is a wasteful number, since it uses less digits than its factorization.

63968536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778 (or 5774 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 63968536 is about 7998.0332582454. The cubic root of 63968536 is about 399.9344392551.

The spelling of 63968536 in words is "sixty-three million, nine hundred sixty-eight thousand, five hundred thirty-six".