63875905 has 4 divisors (see below), whose sum is σ = 76651092. Its totient is φ = 51100720.

The previous prime is 63875881. The next prime is 63875927. The reversal of 63875905 is 50957836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29289744 + 34586161 = 5412^2 + 5881^2 .

It is not a de Polignac number, because 63875905 - 2⁵ = 63875873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6387586 + ... + 6387595.

It is an arithmetic number, because the mean of its divisors is an integer number (19162773).

Almost surely, 2^63875905 is an apocalyptic number.

It is an amenable number.

63875905 is a deficient number, since it is larger than the sum of its proper divisors (12775187).

63875905 is a wasteful number, since it uses less digits than its factorization.

63875905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775186.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 63875905 is about 7992.2402991902. The cubic root of 63875905 is about 399.7413014738.

The spelling of 63875905 in words is "sixty-three million, eight hundred seventy-five thousand, nine hundred five".