86708537 has 4 divisors (see below), whose sum is σ = 87929856. Its totient is φ = 85487220.

The previous prime is 86708527. The next prime is 86708539. The reversal of 86708537 is 73580768.

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 86708537 - 2¹⁰ = 86707513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86708539) 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, 610553 + ... + 610694.

It is an arithmetic number, because the mean of its divisors is an integer number (21982464).

Almost surely, 2^86708537 is an apocalyptic number.

It is an amenable number.

86708537 is a deficient number, since it is larger than the sum of its proper divisors (1221319).

86708537 is a wasteful number, since it uses less digits than its factorization.

86708537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221318.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 86708537 is about 9311.7418886049. The cubic root of 86708537 is about 442.6093861742.

The spelling of 86708537 in words is "eighty-six million, seven hundred eight thousand, five hundred thirty-seven".