2639145 has 16 divisors (see below), whose sum is σ = 4368960. Its totient is φ = 1358784.

The previous prime is 2639111. The next prime is 2639149. The reversal of 2639145 is 5419362.

It is not a de Polignac number, because 2639145 - 2⁹ = 2638633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2639149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2599 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (273060).

2^2639145 is an apocalyptic number.

It is an amenable number.

2639145 is a deficient number, since it is larger than the sum of its proper divisors (1729815).

2639145 is a wasteful number, since it uses less digits than its factorization.

2639145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104.

The product of its digits is 6480, while the sum is 30.

The square root of 2639145 is about 1624.5445515590. The cubic root of 2639145 is about 138.1935427573.

The spelling of 2639145 in words is "two million, six hundred thirty-nine thousand, one hundred forty-five".