90166718 has 16 divisors (see below), whose sum is σ = 137437776. Its totient is φ = 44358720.

The previous prime is 90166697. The next prime is 90166721. The reversal of 90166718 is 81766109.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45680 + ... + 47612.

It is an arithmetic number, because the mean of its divisors is an integer number (8589861).

Almost surely, 2^90166718 is an apocalyptic number.

90166718 is a deficient number, since it is larger than the sum of its proper divisors (47271058).

90166718 is a wasteful number, since it uses less digits than its factorization.

90166718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 90166718 is about 9495.6157251650. The cubic root of 90166718 is about 448.4170190916.

The spelling of 90166718 in words is "ninety million, one hundred sixty-six thousand, seven hundred eighteen".