16898645 has 4 divisors (see below), whose sum is σ = 20278380. Its totient is φ = 13518912.

The previous prime is 16898633. The next prime is 16898669. The reversal of 16898645 is 54689861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54689861 = 97 ⋅563813.

It can be written as a sum of positive squares in 2 ways, for example, as 3407716 + 13490929 = 1846^2 + 3673^2 .

It is a cyclic number.

It is not a de Polignac number, because 16898645 - 2¹⁶ = 16833109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16898645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689860 + ... + 1689869.

It is an arithmetic number, because the mean of its divisors is an integer number (5069595).

Almost surely, 2^16898645 is an apocalyptic number.

It is an amenable number.

16898645 is a deficient number, since it is larger than the sum of its proper divisors (3379735).

16898645 is an equidigital number, since it uses as much as digits as its factorization.

16898645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379734.

The product of its digits is 414720, while the sum is 47.

The square root of 16898645 is about 4110.7961515989. The cubic root of 16898645 is about 256.6161357394.

The spelling of 16898645 in words is "sixteen million, eight hundred ninety-eight thousand, six hundred forty-five".