2598961 has 4 divisors (see below), whose sum is σ = 2648052. Its totient is φ = 2549872.

The previous prime is 2598941. The next prime is 2598971. The reversal of 2598961 is 1698952.

2598961 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2307361 + 291600 = 1519^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2598961 - 2⁵ = 2598929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2598941) 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, 24466 + ... + 24571.

It is an arithmetic number, because the mean of its divisors is an integer number (662013).

2^2598961 is an apocalyptic number.

It is an amenable number.

2598961 is a deficient number, since it is larger than the sum of its proper divisors (49091).

2598961 is an equidigital number, since it uses as much as digits as its factorization.

2598961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49090.

The product of its digits is 38880, while the sum is 40.

The square root of 2598961 is about 1612.1293372431. The cubic root of 2598961 is about 137.4885676445.

Subtracting from 2598961 its reverse (1698952), we obtain a palindrome (900009).

The spelling of 2598961 in words is "two million, five hundred ninety-eight thousand, nine hundred sixty-one".