86639086 has 8 divisors (see below), whose sum is σ = 131151240. Its totient is φ = 42922008.

The previous prime is 86639083. The next prime is 86639087. The reversal of 86639086 is 68093668.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86639083) 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, 198496 + ... + 198931.

It is an arithmetic number, because the mean of its divisors is an integer number (16393905).

Almost surely, 2^86639086 is an apocalyptic number.

86639086 is a deficient number, since it is larger than the sum of its proper divisors (44512154).

86639086 is a wasteful number, since it uses less digits than its factorization.

86639086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397538.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 86639086 is about 9308.0119252180. The cubic root of 86639086 is about 442.4911822219.

The spelling of 86639086 in words is "eighty-six million, six hundred thirty-nine thousand, eighty-six".