64263975 has 12 divisors (see below), whose sum is σ = 106249896. Its totient is φ = 34274080.

The previous prime is 64263959. The next prime is 64264019. The reversal of 64263975 is 57936246.

It is not a de Polignac number, because 64263975 - 2⁴ = 64263959 is a prime.

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, 428352 + ... + 428501.

It is an arithmetic number, because the mean of its divisors is an integer number (8854158).

Almost surely, 2^64263975 is an apocalyptic number.

64263975 is a deficient number, since it is larger than the sum of its proper divisors (41985921).

64263975 is a wasteful number, since it uses less digits than its factorization.

64263975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856866 (or 856861 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 64263975 is about 8016.4814600921. The cubic root of 64263975 is about 400.5491935377.

It can be divided in two parts, 6426 and 3975, that added together give a palindrome (10401).

The spelling of 64263975 in words is "sixty-four million, two hundred sixty-three thousand, nine hundred seventy-five".