16004664 has 48 divisors (see below), whose sum is σ = 46683000. Its totient is φ = 4924224.

The previous prime is 16004657. The next prime is 16004671. The reversal of 16004664 is 46640061.

16004664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16004657) and next prime (16004671).

It is a super-2 number, since 2×16004664² = 512298539505792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7614 + ... + 9485.

Almost surely, 2^16004664 is an apocalyptic number.

It is an amenable number.

16004664 is an abundant number, since it is smaller than the sum of its proper divisors (30678336).

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

16004664 is a wasteful number, since it uses less digits than its factorization.

16004664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17124 (or 17117 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16004664 is about 4000.5829575201. The cubic root of 16004664 is about 252.0086920660.

The spelling of 16004664 in words is "sixteen million, four thousand, six hundred sixty-four".