63445975 has 12 divisors (see below), whose sum is σ = 78785136. Its totient is φ = 50684480.

The previous prime is 63445969. The next prime is 63445999. The reversal of 63445975 is 57954436.

It is not a de Polignac number, because 63445975 - 2⁹ = 63445463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22494 + ... + 25156.

It is an arithmetic number, because the mean of its divisors is an integer number (6565428).

Almost surely, 2^63445975 is an apocalyptic number.

63445975 is a deficient number, since it is larger than the sum of its proper divisors (15339161).

63445975 is a wasteful number, since it uses less digits than its factorization.

63445975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626 (or 3621 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The square root of 63445975 is about 7965.2981739543. The cubic root of 63445975 is about 398.8424345872.

The spelling of 63445975 in words is "sixty-three million, four hundred forty-five thousand, nine hundred seventy-five".