64089975 has 12 divisors (see below), whose sum is σ = 105962216. Its totient is φ = 34181280.

The previous prime is 64089973. The next prime is 64089997. The reversal of 64089975 is 57998046.

It is not a de Polignac number, because 64089975 - 2¹ = 64089973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64089973) by changing a digit.

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, 427192 + ... + 427341.

Almost surely, 2^64089975 is an apocalyptic number.

64089975 is a deficient number, since it is larger than the sum of its proper divisors (41872241).

64089975 is a wasteful number, since it uses less digits than its factorization.

64089975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854546 (or 854541 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 64089975 is about 8005.6214624475. The cubic root of 64089975 is about 400.1873601434.

The spelling of 64089975 in words is "sixty-four million, eighty-nine thousand, nine hundred seventy-five".