16609712 has 20 divisors (see below), whose sum is σ = 36778896. Its totient is φ = 7118400.

The previous prime is 16609699. The next prime is 16609727. The reversal of 16609712 is 21790661.

It is a happy number.

It is a super-4 number, since 4×16609712⁴ (a number of 30 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74039 + ... + 74262.

Almost surely, 2^16609712 is an apocalyptic number.

It is an amenable number.

16609712 is an abundant number, since it is smaller than the sum of its proper divisors (20169184).

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

16609712 is a wasteful number, since it uses less digits than its factorization.

16609712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148316 (or 148310 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 16609712 is about 4075.5014415407. The cubic root of 16609712 is about 255.1451794079.

The spelling of 16609712 in words is "sixteen million, six hundred nine thousand, seven hundred twelve".