2641789 has 6 divisors (see below), whose sum is σ = 2730750. Its totient is φ = 2555640.

The previous prime is 2641777. The next prime is 2641799. The reversal of 2641789 is 9871462.

It can be written as a sum of positive squares in only one way, i.e., 1776889 + 864900 = 1333^2 + 930^2 .

It is not a de Polignac number, because 2641789 - 2⁹ = 2641277 is a prime.

It is a Duffinian number.

2641789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2641739) 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, 414 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (455125).

2^2641789 is an apocalyptic number.

It is an amenable number.

2641789 is a deficient number, since it is larger than the sum of its proper divisors (88961).

2641789 is an equidigital number, since it uses as much as digits as its factorization.

2641789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811 (or 2780 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 2641789 is about 1625.3581143859. The cubic root of 2641789 is about 138.2396766095.

The spelling of 2641789 in words is "two million, six hundred forty-one thousand, seven hundred eighty-nine".