2998689 has 4 divisors (see below), whose sum is σ = 3998256. Its totient is φ = 1999124.

The previous prime is 2998679. The next prime is 2998693. The reversal of 2998689 is 9868992.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2998689 - 2⁵ = 2998657 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2998649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499779 + ... + 499784.

It is an arithmetic number, because the mean of its divisors is an integer number (999564).

2^2998689 is an apocalyptic number.

It is an amenable number.

2998689 is a deficient number, since it is larger than the sum of its proper divisors (999567).

2998689 is an equidigital number, since it uses as much as digits as its factorization.

2998689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999566.

The product of its digits is 559872, while the sum is 51.

The square root of 2998689 is about 1731.6723131124. The cubic root of 2998689 is about 144.2039452010.

The spelling of 2998689 in words is "two million, nine hundred ninety-eight thousand, six hundred eighty-nine".