16998961 has 8 divisors (see below), whose sum is σ = 19498304. Its totient is φ = 14517360.

The previous prime is 16998923. The next prime is 16998973. The reversal of 16998961 is 16989961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16998961 - 2⁷ = 16998833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16998361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310 + ... + 6271.

It is an arithmetic number, because the mean of its divisors is an integer number (2437288).

It is a Poulet number, since it divides 2^16998960-1.

Almost surely, 2^16998961 is an apocalyptic number.

It is an amenable number.

16998961 is a deficient number, since it is larger than the sum of its proper divisors (2499343).

16998961 is an equidigital number, since it uses as much as digits as its factorization.

16998961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8871.

The product of its digits is 209952, while the sum is 49.

The square root of 16998961 is about 4122.9796264352. The cubic root of 16998961 is about 257.1229206031.

The spelling of 16998961 in words is "sixteen million, nine hundred ninety-eight thousand, nine hundred sixty-one".