16692985 has 4 divisors (see below), whose sum is σ = 20031588. Its totient is φ = 13354384.

The previous prime is 16692979. The next prime is 16692989. The reversal of 16692985 is 58929661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 13623481 = 1752^2 + 3691^2 .

It is a cyclic number.

It is not a de Polignac number, because 16692985 - 2⁷ = 16692857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16692989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669294 + ... + 1669303.

It is an arithmetic number, because the mean of its divisors is an integer number (5007897).

Almost surely, 2^16692985 is an apocalyptic number.

It is an amenable number.

16692985 is a deficient number, since it is larger than the sum of its proper divisors (3338603).

16692985 is an equidigital number, since it uses as much as digits as its factorization.

16692985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338602.

The product of its digits is 233280, while the sum is 46.

The square root of 16692985 is about 4085.7049575318. The cubic root of 16692985 is about 255.5708600020.

The spelling of 16692985 in words is "sixteen million, six hundred ninety-two thousand, nine hundred eighty-five".