16646012 has 12 divisors (see below), whose sum is σ = 29419656. Its totient is φ = 8240400.

The previous prime is 16645973. The next prime is 16646023. The reversal of 16646012 is 21064661.

It is a happy number.

It is a congruent number.

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, 20198 + ... + 21005.

It is an arithmetic number, because the mean of its divisors is an integer number (2451638).

Almost surely, 2^16646012 is an apocalyptic number.

It is an amenable number.

16646012 is a deficient number, since it is larger than the sum of its proper divisors (12773644).

16646012 is a wasteful number, since it uses less digits than its factorization.

16646012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41308 (or 41306 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16646012 is about 4079.9524507033. The cubic root of 16646012 is about 255.3309147393.

The spelling of 16646012 in words is "sixteen million, six hundred forty-six thousand, twelve".