2643579 has 12 divisors (see below), whose sum is σ = 3837600. Its totient is φ = 1753584.

The previous prime is 2643569. The next prime is 2643581. The reversal of 2643579 is 9753462.

2643579 is a `hidden beast` number, since 2 + 643 + 5 + 7 + 9 = 666.

It is not a de Polignac number, because 2643579 - 2⁵ = 2643547 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2643559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1537 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (319800).

2^2643579 is an apocalyptic number.

2643579 is a deficient number, since it is larger than the sum of its proper divisors (1194021).

2643579 is a wasteful number, since it uses less digits than its factorization.

2643579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1471 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 2643579 is about 1625.9086690217. The cubic root of 2643579 is about 138.2708919657.

The spelling of 2643579 in words is "two million, six hundred forty-three thousand, five hundred seventy-nine".