86137817 has 4 divisors (see below), whose sum is σ = 87597840. Its totient is φ = 84677796.

The previous prime is 86137787. The next prime is 86137819. The reversal of 86137817 is 71873168.

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 86137817 - 2²⁴ = 69360601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86137819) 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, 729923 + ... + 730040.

It is an arithmetic number, because the mean of its divisors is an integer number (21899460).

Almost surely, 2^86137817 is an apocalyptic number.

It is an amenable number.

86137817 is a deficient number, since it is larger than the sum of its proper divisors (1460023).

86137817 is a wasteful number, since it uses less digits than its factorization.

86137817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460022.

The product of its digits is 56448, while the sum is 41.

The square root of 86137817 is about 9281.0461156057. The cubic root of 86137817 is about 441.6361552594.

The spelling of 86137817 in words is "eighty-six million, one hundred thirty-seven thousand, eight hundred seventeen".