86659791 has 8 divisors (see below), whose sum is σ = 120570240. Its totient is φ = 55261272.

The previous prime is 86659777. The next prime is 86659799. The reversal of 86659791 is 19795668.

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

It is not a de Polignac number, because 86659791 - 2¹³ = 86651599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86659799) 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, 627901 + ... + 628038.

It is an arithmetic number, because the mean of its divisors is an integer number (15071280).

Almost surely, 2^86659791 is an apocalyptic number.

86659791 is a deficient number, since it is larger than the sum of its proper divisors (33910449).

86659791 is a wasteful number, since it uses less digits than its factorization.

86659791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255965.

The product of its digits is 816480, while the sum is 51.

The square root of 86659791 is about 9309.1240726504. The cubic root of 86659791 is about 442.5264282469.

The spelling of 86659791 in words is "eighty-six million, six hundred fifty-nine thousand, seven hundred ninety-one".