16987679 has 2 divisors, whose sum is σ = 16987680. Its totient is φ = 16987678.

The previous prime is 16987669. The next prime is 16987703. The reversal of 16987679 is 97678961.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97678961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16987679 - 2⁸ = 16987423 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16987679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16987669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8493839 + 8493840.

It is an arithmetic number, because the mean of its divisors is an integer number (8493840).

Almost surely, 2^16987679 is an apocalyptic number.

16987679 is a deficient number, since it is larger than the sum of its proper divisors (1).

16987679 is an equidigital number, since it uses as much as digits as its factorization.

16987679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The square root of 16987679 is about 4121.6112140764. The cubic root of 16987679 is about 257.0660249143.

The spelling of 16987679 in words is "sixteen million, nine hundred eighty-seven thousand, six hundred seventy-nine".