16845965 has 4 divisors (see below), whose sum is σ = 20215164. Its totient is φ = 13476768.

The previous prime is 16845953. The next prime is 16845967. The reversal of 16845965 is 56954861.

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 11095561 + 5750404 = 3331^2 + 2398^2 .

It is a cyclic number.

It is not a de Polignac number, because 16845965 - 2⁴ = 16845949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16845967) 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, 1684592 + ... + 1684601.

It is an arithmetic number, because the mean of its divisors is an integer number (5053791).

Almost surely, 2^16845965 is an apocalyptic number.

It is an amenable number.

16845965 is a deficient number, since it is larger than the sum of its proper divisors (3369199).

16845965 is an equidigital number, since it uses as much as digits as its factorization.

16845965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369198.

The product of its digits is 259200, while the sum is 44.

The square root of 16845965 is about 4104.3836321670. The cubic root of 16845965 is about 256.3491989521.

The spelling of 16845965 in words is "sixteen million, eight hundred forty-five thousand, nine hundred sixty-five".