16972771 has 2 divisors, whose sum is σ = 16972772. Its totient is φ = 16972770.

The previous prime is 16972759. The next prime is 16972819. The reversal of 16972771 is 17727961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16972771 - 2⁹ = 16972259 is a prime.

It is not a weakly prime, because it can be changed into another prime (16972721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8486385 + 8486386.

It is an arithmetic number, because the mean of its divisors is an integer number (8486386).

Almost surely, 2^16972771 is an apocalyptic number.

16972771 is a deficient number, since it is larger than the sum of its proper divisors (1).

16972771 is an equidigital number, since it uses as much as digits as its factorization.

16972771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044, while the sum is 40.

The square root of 16972771 is about 4119.8023010819. The cubic root of 16972771 is about 256.9908044775.

The spelling of 16972771 in words is "sixteen million, nine hundred seventy-two thousand, seven hundred seventy-one".