16846645 has 4 divisors (see below), whose sum is σ = 20215980. Its totient is φ = 13477312.

The previous prime is 16846639. The next prime is 16846657. The reversal of 16846645 is 54664861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54664861 = 3671 ⋅14891.

It can be written as a sum of positive squares in 2 ways, for example, as 9572836 + 7273809 = 3094^2 + 2697^2 .

It is a cyclic number.

It is not a de Polignac number, because 16846645 - 2³ = 16846637 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 16846598 and 16846607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684660 + ... + 1684669.

It is an arithmetic number, because the mean of its divisors is an integer number (5053995).

Almost surely, 2^16846645 is an apocalyptic number.

It is an amenable number.

16846645 is a deficient number, since it is larger than the sum of its proper divisors (3369335).

16846645 is an equidigital number, since it uses as much as digits as its factorization.

16846645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369334.

The product of its digits is 138240, while the sum is 40.

The square root of 16846645 is about 4104.4664695914. The cubic root of 16846645 is about 256.3526481482.

The spelling of 16846645 in words is "sixteen million, eight hundred forty-six thousand, six hundred forty-five".