865086537 has 8 divisors (see below), whose sum is σ = 1318227136. Its totient is φ = 494335152.

The previous prime is 865086533. The next prime is 865086571. The reversal of 865086537 is 735680568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 865086537 - 2² = 865086533 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865086533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20597278 + ... + 20597319.

It is an arithmetic number, because the mean of its divisors is an integer number (164778392).

Almost surely, 2^865086537 is an apocalyptic number.

It is an amenable number.

865086537 is a deficient number, since it is larger than the sum of its proper divisors (453140599).

865086537 is a wasteful number, since it uses less digits than its factorization.

865086537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41194607.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 865086537 is about 29412.3534760481. The cubic root of 865086537 is about 952.8397162452.

The spelling of 865086537 in words is "eight hundred sixty-five million, eighty-six thousand, five hundred thirty-seven".