90166641 has 8 divisors (see below), whose sum is σ = 121461984. Its totient is φ = 59491200.

The previous prime is 90166627. The next prime is 90166673. The reversal of 90166641 is 14666109.

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

It is not a de Polignac number, because 90166641 - 2¹⁵ = 90133873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90166541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154635 + ... + 155216.

It is an arithmetic number, because the mean of its divisors is an integer number (15182748).

Almost surely, 2^90166641 is an apocalyptic number.

It is an amenable number.

90166641 is a deficient number, since it is larger than the sum of its proper divisors (31295343).

90166641 is a wasteful number, since it uses less digits than its factorization.

90166641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309951.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90166641 is about 9495.6116706613. The cubic root of 90166641 is about 448.4168914461.

The spelling of 90166641 in words is "ninety million, one hundred sixty-six thousand, six hundred forty-one".