17980659 has 6 divisors (see below), whose sum is σ = 25972076. Its totient is φ = 11987100.

The previous prime is 17980657. The next prime is 17980661. The reversal of 17980659 is 95608971.

It is an interprime number because it is at equal distance from previous prime (17980657) and next prime (17980661).

It is not a de Polignac number, because 17980659 - 2¹ = 17980657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17980657) 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 in 5 ways as a sum of consecutive naturals, for example, 998917 + ... + 998934.

Almost surely, 2^17980659 is an apocalyptic number.

17980659 is a deficient number, since it is larger than the sum of its proper divisors (7991417).

17980659 is a wasteful number, since it uses less digits than its factorization.

17980659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997857 (or 1997854 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 17980659 is about 4240.3607157882. The cubic root of 17980659 is about 261.9802395601.

The spelling of 17980659 in words is "seventeen million, nine hundred eighty thousand, six hundred fifty-nine".