86915861 has 8 divisors (see below), whose sum is σ = 91586880. Its totient is φ = 82254528.

The previous prime is 86915839. The next prime is 86915863. The reversal of 86915861 is 16851968.

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

It is a cyclic number.

It is not a de Polignac number, because 86915861 - 2⁶ = 86915797 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 (86915863) 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, 22880 + ... + 26406.

It is an arithmetic number, because the mean of its divisors is an integer number (11448360).

Almost surely, 2^86915861 is an apocalyptic number.

It is an amenable number.

86915861 is a deficient number, since it is larger than the sum of its proper divisors (4671019).

86915861 is a wasteful number, since it uses less digits than its factorization.

86915861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843.

The product of its digits is 103680, while the sum is 44.

The square root of 86915861 is about 9322.8676382323. The cubic root of 86915861 is about 442.9618716834.

The spelling of 86915861 in words is "eighty-six million, nine hundred fifteen thousand, eight hundred sixty-one".