16665088 has 60 divisors (see below), whose sum is σ = 36735930. Its totient is φ = 7546880.

The previous prime is 16665043. The next prime is 16665137. The reversal of 16665088 is 88056661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16386304 + 278784 = 4048^2 + 528^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16665088.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61818 + ... + 62086.

Almost surely, 2^16665088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16665088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18367965).

16665088 is an abundant number, since it is smaller than the sum of its proper divisors (20070842).

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

16665088 is an equidigital number, since it uses as much as digits as its factorization.

16665088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 16665088 is about 4082.2895536696. The cubic root of 16665088 is about 255.4284122288.

The spelling of 16665088 in words is "sixteen million, six hundred sixty-five thousand, eighty-eight".