16660488 has 64 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 5043456.

The previous prime is 16660463. The next prime is 16660499. The reversal of 16660488 is 88406661.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20506 + ... + 21302.

It is an arithmetic number, because the mean of its divisors is an integer number (712215).

Almost surely, 2^16660488 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 16660488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22790880).

16660488 is an abundant number, since it is smaller than the sum of its proper divisors (28921272).

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

16660488 is a wasteful number, since it uses less digits than its factorization.

16660488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 16660488 is about 4081.7261054608. The cubic root of 16660488 is about 255.4049084261.

The spelling of 16660488 in words is "sixteen million, six hundred sixty thousand, four hundred eighty-eight".