16676489 has 4 divisors (see below), whose sum is σ = 16685124. Its totient is φ = 16667856.

The previous prime is 16676461. The next prime is 16676521. The reversal of 16676489 is 98467661.

It is a happy number.

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 14500864 + 2175625 = 3808^2 + 1475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16676489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16676789) 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, 59 + ... + 5775.

It is an arithmetic number, because the mean of its divisors is an integer number (4171281).

Almost surely, 2^16676489 is an apocalyptic number.

It is an amenable number.

16676489 is a deficient number, since it is larger than the sum of its proper divisors (8635).

16676489 is an equidigital number, since it uses as much as digits as its factorization.

16676489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634.

The product of its digits is 435456, while the sum is 47.

The square root of 16676489 is about 4083.6857126865. The cubic root of 16676489 is about 255.4866472547.

The spelling of 16676489 in words is "sixteen million, six hundred seventy-six thousand, four hundred eighty-nine".