90418686 has 8 divisors (see below), whose sum is σ = 180837384. Its totient is φ = 30139560.

The previous prime is 90418667. The next prime is 90418687. The reversal of 90418686 is 68681409.

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

90418686 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90418687) 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, 7534885 + ... + 7534896.

It is an arithmetic number, because the mean of its divisors is an integer number (22604673).

Almost surely, 2^90418686 is an apocalyptic number.

90418686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90418686 is a wasteful number, since it uses less digits than its factorization.

90418686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15069786.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 90418686 is about 9508.8740658398. The cubic root of 90418686 is about 448.8343262722.

The spelling of 90418686 in words is "ninety million, four hundred eighteen thousand, six hundred eighty-six".