16672961 has 2 divisors, whose sum is σ = 16672962. Its totient is φ = 16672960.

The previous prime is 16672933. The next prime is 16672969. The reversal of 16672961 is 16927661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 5550736 = 3335^2 + 2356^2 .

It is a cyclic number.

It is not a de Polignac number, because 16672961 - 2⁶ = 16672897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16672969) 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, 8336480 + 8336481.

It is an arithmetic number, because the mean of its divisors is an integer number (8336481).

Almost surely, 2^16672961 is an apocalyptic number.

It is an amenable number.

16672961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16672961 is an equidigital number, since it uses as much as digits as its factorization.

16672961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 16672961 is about 4083.2537271152. The cubic root of 16672961 is about 255.4686294640.

The spelling of 16672961 in words is "sixteen million, six hundred seventy-two thousand, nine hundred sixty-one".