86537 has 4 divisors (see below), whose sum is σ = 94416. Its totient is φ = 78660.

The previous prime is 86533. The next prime is 86539. The reversal of 86537 is 73568.

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 86537 - 2² = 86533 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 86537.

It is not an unprimeable number, because it can be changed into a prime (86531) 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, 3923 + ... + 3944.

It is an arithmetic number, because the mean of its divisors is an integer number (23604).

2⁸⁶⁵³⁷ is an apocalyptic number.

It is an amenable number.

86537 is a deficient number, since it is larger than the sum of its proper divisors (7879).

86537 is a wasteful number, since it uses less digits than its factorization.

86537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7878.

The product of its digits is 5040, while the sum is 29.

The square root of 86537 is about 294.1717185591. The cubic root of 86537 is about 44.2317319552.

The spelling of 86537 in words is "eighty-six thousand, five hundred thirty-seven".