16990751 has 2 divisors, whose sum is σ = 16990752. Its totient is φ = 16990750.

The previous prime is 16990703. The next prime is 16990783. The reversal of 16990751 is 15709961.

It is a strong prime.

It is an emirp because it is prime and its reverse (15709961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16990751 - 2¹⁰ = 16989727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16990151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8495375 + 8495376.

It is an arithmetic number, because the mean of its divisors is an integer number (8495376).

Almost surely, 2^16990751 is an apocalyptic number.

16990751 is a deficient number, since it is larger than the sum of its proper divisors (1).

16990751 is an equidigital number, since it uses as much as digits as its factorization.

16990751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 16990751 is about 4121.9838670233. The cubic root of 16990751 is about 257.0815196587.

The spelling of 16990751 in words is "sixteen million, nine hundred ninety thousand, seven hundred fifty-one".