16612987 has 2 divisors, whose sum is σ = 16612988. Its totient is φ = 16612986.

The previous prime is 16612957. The next prime is 16613021. The reversal of 16612987 is 78921661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16612987 is a prime.

It is not a weakly prime, because it can be changed into another prime (16612907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8306493 + 8306494.

It is an arithmetic number, because the mean of its divisors is an integer number (8306494).

Almost surely, 2^16612987 is an apocalyptic number.

16612987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16612987 is an equidigital number, since it uses as much as digits as its factorization.

16612987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 16612987 is about 4075.9032127861. The cubic root of 16612987 is about 255.1619476205.

The spelling of 16612987 in words is "sixteen million, six hundred twelve thousand, nine hundred eighty-seven".