16806946 has 8 divisors (see below), whose sum is σ = 27149724. Its totient is φ = 7757040.

The previous prime is 16806941. The next prime is 16806949. The reversal of 16806946 is 64960861.

It can be written as a sum of positive squares in 2 ways, for example, as 16719921 + 87025 = 4089^2 + 295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 16806899 and 16806908.

It is not an unprimeable number, because it can be changed into a prime (16806941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323185 + ... + 323236.

Almost surely, 2^16806946 is an apocalyptic number.

16806946 is a deficient number, since it is larger than the sum of its proper divisors (10342778).

16806946 is a wasteful number, since it uses less digits than its factorization.

16806946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646436.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 16806946 is about 4099.6275440581. The cubic root of 16806946 is about 256.1511253677.

The spelling of 16806946 in words is "sixteen million, eight hundred six thousand, nine hundred forty-six".