86613191 has 16 divisors (see below), whose sum is σ = 104616960. Its totient is φ = 70048800.

The previous prime is 86613187. The next prime is 86613199. The reversal of 86613191 is 19131668.

It is a cyclic number.

It is not a de Polignac number, because 86613191 - 2² = 86613187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86613199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35666 + ... + 38016.

It is an arithmetic number, because the mean of its divisors is an integer number (6538560).

Almost surely, 2^86613191 is an apocalyptic number.

86613191 is a deficient number, since it is larger than the sum of its proper divisors (18003769).

86613191 is a wasteful number, since it uses less digits than its factorization.

86613191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654.

The product of its digits is 7776, while the sum is 35.

The square root of 86613191 is about 9306.6208153121. The cubic root of 86613191 is about 442.4470933799.

The spelling of 86613191 in words is "eighty-six million, six hundred thirteen thousand, one hundred ninety-one".