16655664 has 40 divisors (see below), whose sum is σ = 43677760. Its totient is φ = 5467968.

The previous prime is 16655651. The next prime is 16655689. The reversal of 16655664 is 46655661.

16655664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16655664² = 554822286561792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627 + ... + 5805.

It is an arithmetic number, because the mean of its divisors is an integer number (1091944).

Almost surely, 2^16655664 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 16655664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21838880).

16655664 is an abundant number, since it is smaller than the sum of its proper divisors (27022096).

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

16655664 is a wasteful number, since it uses less digits than its factorization.

16655664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257 (or 5251 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 16655664 is about 4081.1351362090. The cubic root of 16655664 is about 255.3802554425.

The spelling of 16655664 in words is "sixteen million, six hundred fifty-five thousand, six hundred sixty-four".