2573639 has 8 divisors (see below), whose sum is σ = 2642640. Its totient is φ = 2505600.

The previous prime is 2573633. The next prime is 2573653. The reversal of 2573639 is 9363752.

2573639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2573639 - 2⁸ = 2573383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2573599 and 2573608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10559 + ... + 10799.

It is an arithmetic number, because the mean of its divisors is an integer number (330330).

2^2573639 is an apocalyptic number.

2573639 is a deficient number, since it is larger than the sum of its proper divisors (69001).

2573639 is a wasteful number, since it uses less digits than its factorization.

2573639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its digits is 34020, while the sum is 35.

The square root of 2573639 is about 1604.2565256218. The cubic root of 2573639 is about 137.0405868346.

The spelling of 2573639 in words is "two million, five hundred seventy-three thousand, six hundred thirty-nine".