16790905 has 8 divisors (see below), whose sum is σ = 20334600. Its totient is φ = 13309056.

The previous prime is 16790903. The next prime is 16790911. The reversal of 16790905 is 50909761.

It can be written as a sum of positive squares in 4 ways, for example, as 5588496 + 11202409 = 2364^2 + 3347^2 .

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 16790905 - 2¹ = 16790903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16790903) 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, 14860 + ... + 15949.

It is an arithmetic number, because the mean of its divisors is an integer number (2541825).

Almost surely, 2^16790905 is an apocalyptic number.

It is an amenable number.

16790905 is a deficient number, since it is larger than the sum of its proper divisors (3543695).

16790905 is a wasteful number, since it uses less digits than its factorization.

16790905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30923.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 16790905 is about 4097.6706797887. The cubic root of 16790905 is about 256.0696069265.

The spelling of 16790905 in words is "sixteen million, seven hundred ninety thousand, nine hundred five".