64869575 has 12 divisors (see below), whose sum is σ = 80546928. Its totient is φ = 51825600.

The previous prime is 64869557. The next prime is 64869583. The reversal of 64869575 is 57596846.

It is not a de Polignac number, because 64869575 - 2⁸ = 64869319 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25355 + ... + 27795.

It is an arithmetic number, because the mean of its divisors is an integer number (6712244).

Almost surely, 2^64869575 is an apocalyptic number.

64869575 is a deficient number, since it is larger than the sum of its proper divisors (15677353).

64869575 is a wasteful number, since it uses less digits than its factorization.

64869575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514 (or 3509 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 50.

The square root of 64869575 is about 8054.1650715639. The cubic root of 64869575 is about 401.8034710930.

It can be divided in two parts, 6486 and 9575, that added together give a palindrome (16061).

The spelling of 64869575 in words is "sixty-four million, eight hundred sixty-nine thousand, five hundred seventy-five".