63381375 has 48 divisors (see below), whose sum is σ = 116520768. Its totient is φ = 33134400.

The previous prime is 63381349. The next prime is 63381377. The reversal of 63381375 is 57318336.

63381375 is a `hidden beast` number, since 633 + 8 + 13 + 7 + 5 = 666.

It is not a de Polignac number, because 63381375 - 2⁷ = 63381247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63381377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59094 + ... + 60156.

It is an arithmetic number, because the mean of its divisors is an integer number (2427516).

Almost surely, 2^63381375 is an apocalyptic number.

63381375 is a deficient number, since it is larger than the sum of its proper divisors (53139393).

63381375 is a wasteful number, since it uses less digits than its factorization.

63381375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1124 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 63381375 is about 7961.2420513385. The cubic root of 63381375 is about 398.7070229458.

The spelling of 63381375 in words is "sixty-three million, three hundred eighty-one thousand, three hundred seventy-five".