16806997 has 8 divisors (see below), whose sum is σ = 17619840. Its totient is φ = 16001040.

The previous prime is 16806983. The next prime is 16807003. The reversal of 16806997 is 79960861.

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

It is a cyclic number.

It is not a de Polignac number, because 16806997 - 2⁷ = 16806869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16806967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3672 + ... + 6862.

It is an arithmetic number, because the mean of its divisors is an integer number (2202480).

Almost surely, 2^16806997 is an apocalyptic number.

It is an amenable number.

16806997 is a deficient number, since it is larger than the sum of its proper divisors (812843).

16806997 is a wasteful number, since it uses less digits than its factorization.

16806997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 16806997 is about 4099.6337641306. The cubic root of 16806997 is about 256.1513844609.

The spelling of 16806997 in words is "sixteen million, eight hundred six thousand, nine hundred ninety-seven".