75997287 has 12 divisors (see below), whose sum is σ = 109849480. Its totient is φ = 50629968.

The previous prime is 75997279. The next prime is 75997319. The reversal of 75997287 is 78279957.

It is not a de Polignac number, because 75997287 - 2³ = 75997279 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 (75997217) 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, 23664 + ... + 26682.

Almost surely, 2^75997287 is an apocalyptic number.

75997287 is a deficient number, since it is larger than the sum of its proper divisors (33852193).

75997287 is a wasteful number, since it uses less digits than its factorization.

75997287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822 (or 5819 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 75997287 is about 8717.6422844712. The cubic root of 75997287 is about 423.5773181070.

The spelling of 75997287 in words is "seventy-five million, nine hundred ninety-seven thousand, two hundred eighty-seven".