65875887 has 48 divisors (see below), whose sum is σ = 123821568. Its totient is φ = 32725440.

The previous prime is 65875883. The next prime is 65875897. The reversal of 65875887 is 78857856.

It is a happy number.

65875887 is a `hidden beast` number, since 6 + 58 + 7 + 588 + 7 = 666.

It is not a de Polignac number, because 65875887 - 2² = 65875883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65875883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13873 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (2579616).

Almost surely, 2^65875887 is an apocalyptic number.

65875887 is a deficient number, since it is larger than the sum of its proper divisors (57945681).

65875887 is a wasteful number, since it uses less digits than its factorization.

65875887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180 (or 4177 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The square root of 65875887 is about 8116.3961830359. The cubic root of 65875887 is about 403.8705247124.

The spelling of 65875887 in words is "sixty-five million, eight hundred seventy-five thousand, eight hundred eighty-seven".