16990177 has 2 divisors, whose sum is σ = 16990178. Its totient is φ = 16990176.

The previous prime is 16990163. The next prime is 16990213. The reversal of 16990177 is 77109961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9144576 + 7845601 = 3024^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 16990177 - 2²³ = 8601569 is a prime.

It is a super-2 number, since 2×16990177² = 577332228982658, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16990577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8495088 + 8495089.

It is an arithmetic number, because the mean of its divisors is an integer number (8495089).

Almost surely, 2^16990177 is an apocalyptic number.

It is an amenable number.

16990177 is a deficient number, since it is larger than the sum of its proper divisors (1).

16990177 is an equidigital number, since it uses as much as digits as its factorization.

16990177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 16990177 is about 4121.9142397677. The cubic root of 16990177 is about 257.0786246237.

The spelling of 16990177 in words is "sixteen million, nine hundred ninety thousand, one hundred seventy-seven".