63668715 has 64 divisors (see below), whose sum is σ = 122204160. Its totient is φ = 27941760.

The previous prime is 63668713. The next prime is 63668747. The reversal of 63668715 is 51786636.

It is not a de Polignac number, because 63668715 - 2¹ = 63668713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63668713) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71664 + ... + 72546.

It is an arithmetic number, because the mean of its divisors is an integer number (1909440).

Almost surely, 2^63668715 is an apocalyptic number.

63668715 is a deficient number, since it is larger than the sum of its proper divisors (58535445).

63668715 is a wasteful number, since it uses less digits than its factorization.

63668715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its digits is 181440, while the sum is 42.

The square root of 63668715 is about 7979.2678235537. The cubic root of 63668715 is about 399.3086286192.

The spelling of 63668715 in words is "sixty-three million, six hundred sixty-eight thousand, seven hundred fifteen".