63722920 has 32 divisors (see below), whose sum is σ = 144805320. Its totient is φ = 25235200.

The previous prime is 63722899. The next prime is 63722921. The reversal of 63722920 is 2922736.

63722920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 62694724 + 1028196 = 7918^2 + 1014^2 .

It is a super-2 number, since 2×63722920² = 8121221066652800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63722921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3847 + ... + 11926.

Almost surely, 2^63722920 is an apocalyptic number.

It is an amenable number.

63722920 is an abundant number, since it is smaller than the sum of its proper divisors (81082400).

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

63722920 is a wasteful number, since it uses less digits than its factorization.

63722920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15885 (or 15881 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 63722920 is about 7982.6637158282. The cubic root of 63722920 is about 399.4219149466.

The spelling of 63722920 in words is "sixty-three million, seven hundred twenty-two thousand, nine hundred twenty".