16656456 has 16 divisors (see below), whose sum is σ = 41641200. Its totient is φ = 5552144.

The previous prime is 16656449. The next prime is 16656457. The reversal of 16656456 is 65465661.

It is not an unprimeable number, because it can be changed into a prime (16656457) 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 3 ways as a sum of consecutive naturals, for example, 346986 + ... + 347033.

It is an arithmetic number, because the mean of its divisors is an integer number (2602575).

Almost surely, 2^16656456 is an apocalyptic number.

It is an amenable number.

16656456 is an abundant number, since it is smaller than the sum of its proper divisors (24984744).

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

16656456 is a wasteful number, since it uses less digits than its factorization.

16656456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694028 (or 694024 counting only the distinct ones).

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

The square root of 16656456 is about 4081.2321668829. The cubic root of 16656456 is about 255.3843032739.

The spelling of 16656456 in words is "sixteen million, six hundred fifty-six thousand, four hundred fifty-six".