16890563 has 8 divisors (see below), whose sum is σ = 17822400. Its totient is φ = 15963048.

The previous prime is 16890541. The next prime is 16890581. The reversal of 16890563 is 36509861.

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

It is a cyclic number.

It is not a de Polignac number, because 16890563 - 2¹⁶ = 16825027 is a prime.

It is a super-2 number, since 2×16890563² = 570582236913938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16899563) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9908 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (2227800).

Almost surely, 2^16890563 is an apocalyptic number.

16890563 is a deficient number, since it is larger than the sum of its proper divisors (931837).

16890563 is a wasteful number, since it uses less digits than its factorization.

16890563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 16890563 is about 4109.8130127781. The cubic root of 16890563 is about 256.5752191978.

The spelling of 16890563 in words is "sixteen million, eight hundred ninety thousand, five hundred sixty-three".