16630987 has 2 divisors, whose sum is σ = 16630988. Its totient is φ = 16630986.

The previous prime is 16630967. The next prime is 16631011. The reversal of 16630987 is 78903661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16630987 is a prime.

It is not a weakly prime, because it can be changed into another prime (16630907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8315493 + 8315494.

It is an arithmetic number, because the mean of its divisors is an integer number (8315494).

Almost surely, 2^16630987 is an apocalyptic number.

16630987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16630987 is an equidigital number, since it uses as much as digits as its factorization.

16630987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16630987 is about 4078.1107145344. The cubic root of 16630987 is about 255.2540694700.

The spelling of 16630987 in words is "sixteen million, six hundred thirty thousand, nine hundred eighty-seven".