16576489 has 2 divisors, whose sum is σ = 16576490. Its totient is φ = 16576488.

The previous prime is 16576459. The next prime is 16576499. The reversal of 16576489 is 98467561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11323225 + 5253264 = 3365^2 + 2292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16576489 is a prime.

It is not a weakly prime, because it can be changed into another prime (16576459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8288244 + 8288245.

It is an arithmetic number, because the mean of its divisors is an integer number (8288245).

Almost surely, 2^16576489 is an apocalyptic number.

It is an amenable number.

16576489 is a deficient number, since it is larger than the sum of its proper divisors (1).

16576489 is an equidigital number, since it uses as much as digits as its factorization.

16576489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 16576489 is about 4071.4234611497. The cubic root of 16576489 is about 254.9749507626.

The spelling of 16576489 in words is "sixteen million, five hundred seventy-six thousand, four hundred eighty-nine".