16445677 has 2 divisors, whose sum is σ = 16445678. Its totient is φ = 16445676.

The previous prime is 16445623. The next prime is 16445699. The reversal of 16445677 is 77654461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10150596 + 6295081 = 3186^2 + 2509^2 .

It is an emirp because it is prime and its reverse (77654461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16445677 - 2⁷ = 16445549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16445777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8222838 + 8222839.

It is an arithmetic number, because the mean of its divisors is an integer number (8222839).

Almost surely, 2^16445677 is an apocalyptic number.

It is an amenable number.

16445677 is a deficient number, since it is larger than the sum of its proper divisors (1).

16445677 is an equidigital number, since it uses as much as digits as its factorization.

16445677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 16445677 is about 4055.3269905151. The cubic root of 16445677 is about 254.3024740969.

The spelling of 16445677 in words is "sixteen million, four hundred forty-five thousand, six hundred seventy-seven".