16690829 has 2 divisors, whose sum is σ = 16690830. Its totient is φ = 16690828.

The previous prime is 16690819. The next prime is 16690897. The reversal of 16690829 is 92809661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14645929 + 2044900 = 3827^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16690829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16690819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8345414 + 8345415.

It is an arithmetic number, because the mean of its divisors is an integer number (8345415).

Almost surely, 2^16690829 is an apocalyptic number.

It is an amenable number.

16690829 is a deficient number, since it is larger than the sum of its proper divisors (1).

16690829 is an equidigital number, since it uses as much as digits as its factorization.

16690829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 16690829 is about 4085.4411022557. The cubic root of 16690829 is about 255.5598566874.

The spelling of 16690829 in words is "sixteen million, six hundred ninety thousand, eight hundred twenty-nine".