86629918 has 8 divisors (see below), whose sum is σ = 130006440. Its totient is φ = 43294440.

The previous prime is 86629897. The next prime is 86629919. The reversal of 86629918 is 81992668.

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 (86629919) 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, 4288 + ... + 13843.

It is an arithmetic number, because the mean of its divisors is an integer number (16250805).

Almost surely, 2^86629918 is an apocalyptic number.

86629918 is a deficient number, since it is larger than the sum of its proper divisors (43376522).

86629918 is a wasteful number, since it uses less digits than its factorization.

86629918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20522.

The product of its digits is 373248, while the sum is 49.

The square root of 86629918 is about 9307.5194332325. The cubic root of 86629918 is about 442.4755737844.

The spelling of 86629918 in words is "eighty-six million, six hundred twenty-nine thousand, nine hundred eighteen".