16690885 has 16 divisors (see below), whose sum is σ = 20837376. Its totient is φ = 12823488.

The previous prime is 16690829. The next prime is 16690897. The reversal of 16690885 is 58809661.

It is a cyclic number.

It is not a de Polignac number, because 16690885 - 2¹³ = 16682693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14812 + ... + 15898.

It is an arithmetic number, because the mean of its divisors is an integer number (1302336).

Almost surely, 2^16690885 is an apocalyptic number.

It is an amenable number.

16690885 is a deficient number, since it is larger than the sum of its proper divisors (4146491).

16690885 is a wasteful number, since it uses less digits than its factorization.

16690885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 16690885 is about 4085.4479558550. The cubic root of 16690885 is about 255.5601424998.

The spelling of 16690885 in words is "sixteen million, six hundred ninety thousand, eight hundred eighty-five".