16677517 has 2 divisors, whose sum is σ = 16677518. Its totient is φ = 16677516.

The previous prime is 16677503. The next prime is 16677533. The reversal of 16677517 is 71577661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16532356 + 145161 = 4066^2 + 381^2 .

It is an emirp because it is prime and its reverse (71577661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16677517 - 2⁷ = 16677389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16677517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16677587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8338758 + 8338759.

It is an arithmetic number, because the mean of its divisors is an integer number (8338759).

Almost surely, 2^16677517 is an apocalyptic number.

It is an amenable number.

16677517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16677517 is an equidigital number, since it uses as much as digits as its factorization.

16677517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 40.

The square root of 16677517 is about 4083.8115774360. The cubic root of 16677517 is about 255.4918968584.

The spelling of 16677517 in words is "sixteen million, six hundred seventy-seven thousand, five hundred seventeen".