86750831 has 4 divisors (see below), whose sum is σ = 86776272. Its totient is φ = 86725392.

The previous prime is 86750801. The next prime is 86750849. The reversal of 86750831 is 13805768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86750831 is a prime.

It is a super-2 number, since 2×86750831² = 15051413358381122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86750801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6635 + ... + 14748.

It is an arithmetic number, because the mean of its divisors is an integer number (21694068).

Almost surely, 2^86750831 is an apocalyptic number.

86750831 is a deficient number, since it is larger than the sum of its proper divisors (25441).

86750831 is a wasteful number, since it uses less digits than its factorization.

86750831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25440.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 86750831 is about 9314.0126154091. The cubic root of 86750831 is about 442.6813386378.

The spelling of 86750831 in words is "eighty-six million, seven hundred fifty thousand, eight hundred thirty-one".