16659090 has 96 divisors (see below), whose sum is σ = 51158016. Its totient is φ = 3680640.

The previous prime is 16659077. The next prime is 16659127. The reversal of 16659090 is 9095661.

16659090 is a `hidden beast` number, since 1 + 66 + 590 + 9 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19104 + ... + 19956.

It is an arithmetic number, because the mean of its divisors is an integer number (532896).

Almost surely, 2^16659090 is an apocalyptic number.

16659090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16659090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25579008).

16659090 is an abundant number, since it is smaller than the sum of its proper divisors (34498926).

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

16659090 is a wasteful number, since it uses less digits than its factorization.

16659090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 16659090 is about 4081.5548507891. The cubic root of 16659090 is about 255.3977644567.

The spelling of 16659090 in words is "sixteen million, six hundred fifty-nine thousand, ninety".