63928375 has 16 divisors (see below), whose sum is σ = 91181376. Its totient is φ = 43836000.

The previous prime is 63928373. The next prime is 63928379. The reversal of 63928375 is 57382936.

It is not a de Polignac number, because 63928375 - 2¹ = 63928373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63928373) 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 15 ways as a sum of consecutive naturals, for example, 35656 + ... + 37405.

It is an arithmetic number, because the mean of its divisors is an integer number (5698836).

Almost surely, 2^63928375 is an apocalyptic number.

63928375 is a deficient number, since it is larger than the sum of its proper divisors (27253001).

63928375 is an equidigital number, since it uses as much as digits as its factorization.

63928375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73083 (or 73073 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 63928375 is about 7995.5221843229. The cubic root of 63928375 is about 399.8507255498.

The spelling of 63928375 in words is "sixty-three million, nine hundred twenty-eight thousand, three hundred seventy-five".