63646956 has 72 divisors (see below), whose sum is σ = 167809824. Its totient is φ = 20321280.

The previous prime is 63646949. The next prime is 63646981. The reversal of 63646956 is 65964636.

63646956 is a `hidden beast` number, since 636 + 4 + 6 + 9 + 5 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94236 + ... + 94908.

It is an arithmetic number, because the mean of its divisors is an integer number (2330692).

Almost surely, 2^63646956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63646956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83904912).

63646956 is an abundant number, since it is smaller than the sum of its proper divisors (104162868).

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

63646956 is a wasteful number, since it uses less digits than its factorization.

63646956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 786 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 63646956 is about 7977.9042360760. The cubic root of 63646956 is about 399.2631350754.

The spelling of 63646956 in words is "sixty-three million, six hundred forty-six thousand, nine hundred fifty-six".