16793561 has 2 divisors, whose sum is σ = 16793562. Its totient is φ = 16793560.

The previous prime is 16793551. The next prime is 16793593. The reversal of 16793561 is 16539761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 4648336 = 3485^2 + 2156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16793561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16793551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8396780 + 8396781.

It is an arithmetic number, because the mean of its divisors is an integer number (8396781).

Almost surely, 2^16793561 is an apocalyptic number.

It is an amenable number.

16793561 is a deficient number, since it is larger than the sum of its proper divisors (1).

16793561 is an equidigital number, since it uses as much as digits as its factorization.

16793561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 16793561 is about 4097.9947535350. The cubic root of 16793561 is about 256.0831079859.

The spelling of 16793561 in words is "sixteen million, seven hundred ninety-three thousand, five hundred sixty-one".