86306891 has 8 divisors (see below), whose sum is σ = 96343104. Its totient is φ = 76635720.

The previous prime is 86306867. The next prime is 86306917. The reversal of 86306891 is 19860368.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86306891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86306191) 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, 90761 + ... + 91706.

It is an arithmetic number, because the mean of its divisors is an integer number (12042888).

Almost surely, 2^86306891 is an apocalyptic number.

86306891 is a deficient number, since it is larger than the sum of its proper divisors (10036213).

86306891 is a wasteful number, since it uses less digits than its factorization.

86306891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182521.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 86306891 is about 9290.1502140708. The cubic root of 86306891 is about 441.9249188276.

The spelling of 86306891 in words is "eighty-six million, three hundred six thousand, eight hundred ninety-one".