64838975 has 12 divisors (see below), whose sum is σ = 81534960. Its totient is φ = 51139200.

The previous prime is 64838927. The next prime is 64839017. The reversal of 64838975 is 57983846.

It is not a de Polignac number, because 64838975 - 2¹² = 64834879 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16490 + ... + 20039.

It is an arithmetic number, because the mean of its divisors is an integer number (6794580).

Almost surely, 2^64838975 is an apocalyptic number.

64838975 is a deficient number, since it is larger than the sum of its proper divisors (16695985).

64838975 is a wasteful number, since it uses less digits than its factorization.

64838975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36610 (or 36605 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 64838975 is about 8052.2652092439. The cubic root of 64838975 is about 401.7402821481.

The spelling of 64838975 in words is "sixty-four million, eight hundred thirty-eight thousand, nine hundred seventy-five".