75444164 has 12 divisors (see below), whose sum is σ = 139793724. Its totient is φ = 35503104.

The previous prime is 75444157. The next prime is 75444191. The reversal of 75444164 is 46144457.

It can be written as a sum of positive squares in 2 ways, for example, as 38962564 + 36481600 = 6242^2 + 6040^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 554669 + ... + 554804.

It is an arithmetic number, because the mean of its divisors is an integer number (11649477).

Almost surely, 2^75444164 is an apocalyptic number.

It is an amenable number.

75444164 is a deficient number, since it is larger than the sum of its proper divisors (64349560).

75444164 is a wasteful number, since it uses less digits than its factorization.

75444164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109494 (or 1109492 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 75444164 is about 8685.8600034769. The cubic root of 75444164 is about 422.5471889218.

The spelling of 75444164 in words is "seventy-five million, four hundred forty-four thousand, one hundred sixty-four".