63996015 has 16 divisors (see below), whose sum is σ = 104073696. Its totient is φ = 33571200.

The previous prime is 63996001. The next prime is 63996029. The reversal of 63996015 is 51069936.

It is an interprime number because it is at equal distance from previous prime (63996001) and next prime (63996029).

It is not a de Polignac number, because 63996015 - 2⁸ = 63995759 is a prime.

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, 34056 + ... + 35885.

It is an arithmetic number, because the mean of its divisors is an integer number (6504606).

Almost surely, 2^63996015 is an apocalyptic number.

63996015 is a deficient number, since it is larger than the sum of its proper divisors (40077681).

63996015 is a wasteful number, since it uses less digits than its factorization.

63996015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70010.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 63996015 is about 7999.7509336229. The cubic root of 63996015 is about 399.9916977443.

The spelling of 63996015 in words is "sixty-three million, nine hundred ninety-six thousand, fifteen".