2645539 has 8 divisors (see below), whose sum is σ = 2876720. Its totient is φ = 2418336.

The previous prime is 2645527. The next prime is 2645543. The reversal of 2645539 is 9355462.

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 2645539 - 2⁵ = 2645507 is a prime.

It is a Duffinian number.

2645539 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2645519) 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, 484 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (359590).

2^2645539 is an apocalyptic number.

2645539 is a deficient number, since it is larger than the sum of its proper divisors (231181).

2645539 is a wasteful number, since it uses less digits than its factorization.

2645539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989.

The product of its digits is 32400, while the sum is 34.

The square root of 2645539 is about 1626.5112972248. The cubic root of 2645539 is about 138.3050557513.

The spelling of 2645539 in words is "two million, six hundred forty-five thousand, five hundred thirty-nine".