63679956 has 24 divisors (see below), whose sum is σ = 150032064. Its totient is φ = 21020160.

The previous prime is 63679951. The next prime is 63679961. The reversal of 63679956 is 65997636.

It is an interprime number because it is at equal distance from previous prime (63679951) and next prime (63679961).

It is a junction number, because it is equal to n+sod(n) for n = 63679899 and 63679908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63679951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24525 + ... + 26996.

It is an arithmetic number, because the mean of its divisors is an integer number (6251336).

Almost surely, 2^63679956 is an apocalyptic number.

It is an amenable number.

63679956 is an abundant number, since it is smaller than the sum of its proper divisors (86352108).

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

63679956 is a wasteful number, since it uses less digits than its factorization.

63679956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51631 (or 51629 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 51.

The square root of 63679956 is about 7979.9721804026. The cubic root of 63679956 is about 399.3321271520.

The spelling of 63679956 in words is "sixty-three million, six hundred seventy-nine thousand, nine hundred fifty-six".