63961928 has 32 divisors (see below), whose sum is σ = 124320000. Its totient is φ = 30818880.

The previous prime is 63961921. The next prime is 63961949. The reversal of 63961928 is 82916936.

It is a super-2 number, since 2×63961928² = 8182256466954368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63961921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86183 + ... + 86921.

It is an arithmetic number, because the mean of its divisors is an integer number (3885000).

Almost surely, 2^63961928 is an apocalyptic number.

It is an amenable number.

63961928 is a deficient number, since it is larger than the sum of its proper divisors (60358072).

63961928 is a wasteful number, since it uses less digits than its factorization.

63961928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1121 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 63961928 is about 7997.6201460184. The cubic root of 63961928 is about 399.9206676003.

The spelling of 63961928 in words is "sixty-three million, nine hundred sixty-one thousand, nine hundred twenty-eight".