16904664 has 96 divisors (see below), whose sum is σ = 55429920. Its totient is φ = 4543488.

The previous prime is 16904663. The next prime is 16904711. The reversal of 16904664 is 46640961.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16904663) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7582 + ... + 9554.

It is an arithmetic number, because the mean of its divisors is an integer number (577395).

Almost surely, 2^16904664 is an apocalyptic number.

16904664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16904664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27714960).

16904664 is an abundant number, since it is smaller than the sum of its proper divisors (38525256).

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

16904664 is a wasteful number, since it uses less digits than its factorization.

16904664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 16904664 is about 4111.5281830482. The cubic root of 16904664 is about 256.6465995068.

The spelling of 16904664 in words is "sixteen million, nine hundred four thousand, six hundred sixty-four".