16630657 has 2 divisors, whose sum is σ = 16630658. Its totient is φ = 16630656.

The previous prime is 16630651. The next prime is 16630693. The reversal of 16630657 is 75603661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8473921 + 8156736 = 2911^2 + 2856^2 .

It is a cyclic number.

It is not a de Polignac number, because 16630657 - 2²³ = 8242049 is a prime.

It is not a weakly prime, because it can be changed into another prime (16630651) 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, 8315328 + 8315329.

It is an arithmetic number, because the mean of its divisors is an integer number (8315329).

Almost surely, 2^16630657 is an apocalyptic number.

It is an amenable number.

16630657 is a deficient number, since it is larger than the sum of its proper divisors (1).

16630657 is an equidigital number, since it uses as much as digits as its factorization.

16630657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 16630657 is about 4078.0702544218. The cubic root of 16630657 is about 255.2523811677.

The spelling of 16630657 in words is "sixteen million, six hundred thirty thousand, six hundred fifty-seven".