63117986 has 4 divisors (see below), whose sum is σ = 94676982. Its totient is φ = 31558992.

The previous prime is 63117979. The next prime is 63118009. The reversal of 63117986 is 68971136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58140625 + 4977361 = 7625^2 + 2231^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15779495 + ... + 15779498.

Almost surely, 2^63117986 is an apocalyptic number.

63117986 is a deficient number, since it is larger than the sum of its proper divisors (31558996).

63117986 is a wasteful number, since it uses less digits than its factorization.

63117986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31558995.

The product of its digits is 54432, while the sum is 41.

The square root of 63117986 is about 7944.6828759869. The cubic root of 63117986 is about 398.1539643203.

The spelling of 63117986 in words is "sixty-three million, one hundred seventeen thousand, nine hundred eighty-six".