86116661 has 4 divisors (see below), whose sum is σ = 86191872. Its totient is φ = 86041452.

The previous prime is 86116637. The next prime is 86116663. The reversal of 86116661 is 16661168.

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 86116661 - 2¹⁴ = 86100277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86116663) 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, 35861 + ... + 38186.

It is an arithmetic number, because the mean of its divisors is an integer number (21547968).

Almost surely, 2^86116661 is an apocalyptic number.

It is an amenable number.

86116661 is a deficient number, since it is larger than the sum of its proper divisors (75211).

86116661 is a wasteful number, since it uses less digits than its factorization.

86116661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75210.

The product of its digits is 10368, while the sum is 35.

The square root of 86116661 is about 9279.9063034063. The cubic root of 86116661 is about 441.5999960754.

The spelling of 86116661 in words is "eighty-six million, one hundred sixteen thousand, six hundred sixty-one".