86631799 has 8 divisors (see below), whose sum is σ = 89646480. Its totient is φ = 83662656.

The previous prime is 86631793. The next prime is 86631803. The reversal of 86631799 is 99713668.

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 86631799 - 2⁹ = 86631287 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 (86631793) 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, 7492 + ... + 15145.

It is an arithmetic number, because the mean of its divisors is an integer number (11205810).

Almost surely, 2^86631799 is an apocalyptic number.

86631799 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

86631799 is a deficient number, since it is larger than the sum of its proper divisors (3014681).

86631799 is a wasteful number, since it uses less digits than its factorization.

86631799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22769.

The product of its digits is 489888, while the sum is 49.

The square root of 86631799 is about 9307.6204800153. The cubic root of 86631799 is about 442.4787762598.

The spelling of 86631799 in words is "eighty-six million, six hundred thirty-one thousand, seven hundred ninety-nine".