2591998 has 8 divisors (see below), whose sum is σ = 3993192. Its totient is φ = 1260936.

The previous prime is 2591987. The next prime is 2592043. The reversal of 2591998 is 8991952.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17440 + ... + 17587.

It is an arithmetic number, because the mean of its divisors is an integer number (499149).

2^2591998 is an apocalyptic number.

2591998 is a deficient number, since it is larger than the sum of its proper divisors (1401194).

2591998 is a wasteful number, since it uses less digits than its factorization.

2591998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35066.

The product of its digits is 58320, while the sum is 43.

The square root of 2591998 is about 1609.9683226697. The cubic root of 2591998 is about 137.3656737757.

The spelling of 2591998 in words is "two million, five hundred ninety-one thousand, nine hundred ninety-eight".