75991113 has 12 divisors (see below), whose sum is σ = 119743728. Its totient is φ = 46055160.

The previous prime is 75991109. The next prime is 75991117. The reversal of 75991113 is 31119957.

It is an interprime number because it is at equal distance from previous prime (75991109) and next prime (75991117).

It is not a de Polignac number, because 75991113 - 2² = 75991109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75991117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383695 + ... + 383892.

It is an arithmetic number, because the mean of its divisors is an integer number (9978644).

Almost surely, 2^75991113 is an apocalyptic number.

It is an amenable number.

75991113 is a deficient number, since it is larger than the sum of its proper divisors (43752615).

75991113 is a wasteful number, since it uses less digits than its factorization.

75991113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767604 (or 767601 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 75991113 is about 8717.2881677733. The cubic root of 75991113 is about 423.5658473590.

The spelling of 75991113 in words is "seventy-five million, nine hundred ninety-one thousand, one hundred thirteen".