75438564 has 12 divisors (see below), whose sum is σ = 176023344. Its totient is φ = 25146184.

The previous prime is 75438547. The next prime is 75438581. The reversal of 75438564 is 46583457.

It is an interprime number because it is at equal distance from previous prime (75438547) and next prime (75438581).

It is a tau number, because it is divible by the number of its divisors (12).

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, 3143262 + ... + 3143285.

It is an arithmetic number, because the mean of its divisors is an integer number (14668612).

Almost surely, 2^75438564 is an apocalyptic number.

It is an amenable number.

75438564 is an abundant number, since it is smaller than the sum of its proper divisors (100584780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75438564 is a wasteful number, since it uses less digits than its factorization.

75438564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286554 (or 6286552 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 75438564 is about 8685.5376344818. The cubic root of 75438564 is about 422.5367338485.

The spelling of 75438564 in words is "seventy-five million, four hundred thirty-eight thousand, five hundred sixty-four".