2543679 has 12 divisors (see below), whose sum is σ = 3702816. Its totient is φ = 1682592.

The previous prime is 2543657. The next prime is 2543699. The reversal of 2543679 is 9763452.

It is not a de Polignac number, because 2543679 - 2⁵ = 2543647 is a prime.

It is an Ulam number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543609) 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, 202 + ... + 2264.

It is an arithmetic number, because the mean of its divisors is an integer number (308568).

2^2543679 is an apocalyptic number.

2543679 is a deficient number, since it is larger than the sum of its proper divisors (1159137).

2543679 is a wasteful number, since it uses less digits than its factorization.

2543679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2203 counting only the distinct ones).

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

The square root of 2543679 is about 1594.8915323620. The cubic root of 2543679 is about 136.5067420089.

The spelling of 2543679 in words is "two million, five hundred forty-three thousand, six hundred seventy-nine".