16610489 has 4 divisors (see below), whose sum is σ = 18983424. Its totient is φ = 14237556.

The previous prime is 16610471. The next prime is 16610491. The reversal of 16610489 is 98401661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16610489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16610459) 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, 1186457 + ... + 1186470.

It is an arithmetic number, because the mean of its divisors is an integer number (4745856).

Almost surely, 2^16610489 is an apocalyptic number.

It is an amenable number.

16610489 is a deficient number, since it is larger than the sum of its proper divisors (2372935).

16610489 is an equidigital number, since it uses as much as digits as its factorization.

16610489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372934.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 16610489 is about 4075.5967661190. The cubic root of 16610489 is about 255.1491578977.

The spelling of 16610489 in words is "sixteen million, six hundred ten thousand, four hundred eighty-nine".