63679968 has 72 divisors (see below), whose sum is σ = 197562456. Its totient is φ = 19296000.

The previous prime is 63679961. The next prime is 63679981. The reversal of 63679968 is 86997636.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63679961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6883 + ... + 13218.

It is an arithmetic number, because the mean of its divisors is an integer number (2743923).

Almost surely, 2^63679968 is an apocalyptic number.

It is an amenable number.

63679968 is an abundant number, since it is smaller than the sum of its proper divisors (133882488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63679968 is a wasteful number, since it uses less digits than its factorization.

63679968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20128 (or 20117 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 63679968 is about 7979.9729322849. The cubic root of 63679968 is about 399.3321522356.

The spelling of 63679968 in words is "sixty-three million, six hundred seventy-nine thousand, nine hundred sixty-eight".