75138764 has 12 divisors (see below), whose sum is σ = 131959464. Its totient is φ = 37436064.

The previous prime is 75138757. The next prime is 75138779. The reversal of 75138764 is 46783157.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32057 + ... + 34320.

It is an arithmetic number, because the mean of its divisors is an integer number (10996622).

Almost surely, 2^75138764 is an apocalyptic number.

It is an amenable number.

75138764 is a deficient number, since it is larger than the sum of its proper divisors (56820700).

75138764 is a wasteful number, since it uses less digits than its factorization.

75138764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66664 (or 66662 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 75138764 is about 8668.2618788313. The cubic root of 75138764 is about 421.9762570591.

The spelling of 75138764 in words is "seventy-five million, one hundred thirty-eight thousand, seven hundred sixty-four".