16899613 has 4 divisors (see below), whose sum is σ = 16908028. Its totient is φ = 16891200.

The previous prime is 16899593. The next prime is 16899629. The reversal of 16899613 is 31699861.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6285049 + 10614564 = 2507^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 16899613 - 2⁹ = 16899101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16899613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16899653) 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, 763 + ... + 5863.

It is an arithmetic number, because the mean of its divisors is an integer number (4227007).

Almost surely, 2^16899613 is an apocalyptic number.

It is an amenable number.

16899613 is a deficient number, since it is larger than the sum of its proper divisors (8415).

16899613 is an equidigital number, since it uses as much as digits as its factorization.

16899613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414.

The product of its digits is 69984, while the sum is 43.

The square root of 16899613 is about 4110.9138886627. The cubic root of 16899613 is about 256.6210355341.

The spelling of 16899613 in words is "sixteen million, eight hundred ninety-nine thousand, six hundred thirteen".