16853405 has 8 divisors (see below), whose sum is σ = 20263392. Its totient is φ = 13456528.

The previous prime is 16853363. The next prime is 16853407. The reversal of 16853405 is 50435861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16853405 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16853407) 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, 179 + ... + 5808.

It is an arithmetic number, because the mean of its divisors is an integer number (2532924).

Almost surely, 2^16853405 is an apocalyptic number.

It is an amenable number.

16853405 is a deficient number, since it is larger than the sum of its proper divisors (3409987).

16853405 is an equidigital number, since it uses as much as digits as its factorization.

16853405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 16853405 is about 4105.2898801424. The cubic root of 16853405 is about 256.3869321686.

The spelling of 16853405 in words is "sixteen million, eight hundred fifty-three thousand, four hundred five".