63956979 has 32 divisors (see below), whose sum is σ = 98757440. Its totient is φ = 40870656.

The previous prime is 63956957. The next prime is 63957011. The reversal of 63956979 is 97965936.

63956979 is a `hidden beast` number, since 6 + 3 + 9 + 569 + 79 = 666.

It is not a de Polignac number, because 63956979 - 2⁹ = 63956467 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (63956939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72489 + ... + 73365.

It is an arithmetic number, because the mean of its divisors is an integer number (3086170).

Almost surely, 2^63956979 is an apocalyptic number.

63956979 is a deficient number, since it is larger than the sum of its proper divisors (34800461).

63956979 is a wasteful number, since it uses less digits than its factorization.

63956979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 990 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 63956979 is about 7997.3107354910. The cubic root of 63956979 is about 399.9103528266.

The spelling of 63956979 in words is "sixty-three million, nine hundred fifty-six thousand, nine hundred seventy-nine".