87865937 has 4 divisors (see below), whose sum is σ = 92490480. Its totient is φ = 83241396.

The previous prime is 87865919. The next prime is 87865951. The reversal of 87865937 is 73956878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87865937 - 2¹² = 87861841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87861937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312243 + ... + 2312280.

It is an arithmetic number, because the mean of its divisors is an integer number (23122620).

Almost surely, 2^87865937 is an apocalyptic number.

It is an amenable number.

87865937 is a deficient number, since it is larger than the sum of its proper divisors (4624543).

87865937 is a wasteful number, since it uses less digits than its factorization.

87865937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624542.

The product of its digits is 2540160, while the sum is 53.

The square root of 87865937 is about 9373.6832141907. The cubic root of 87865937 is about 444.5700294943.

The spelling of 87865937 in words is "eighty-seven million, eight hundred sixty-five thousand, nine hundred thirty-seven".