16806568 has 8 divisors (see below), whose sum is σ = 31512330. Its totient is φ = 8403280.

The previous prime is 16806551. The next prime is 16806599. The reversal of 16806568 is 86560861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11957764 + 4848804 = 3458^2 + 2202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 16806568.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050403 + ... + 1050418.

Almost surely, 2^16806568 is an apocalyptic number.

It is an amenable number.

16806568 is a deficient number, since it is larger than the sum of its proper divisors (14705762).

16806568 is a wasteful number, since it uses less digits than its factorization.

16806568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100827 (or 2100823 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 16806568 is about 4099.5814420499. The cubic root of 16806568 is about 256.1492050138.

The spelling of 16806568 in words is "sixteen million, eight hundred six thousand, five hundred sixty-eight".