2539623 has 8 divisors (see below), whose sum is σ = 3465088. Its totient is φ = 1653624.

The previous prime is 2539583. The next prime is 2539627. The reversal of 2539623 is 3269352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2539623 - 2¹² = 2535527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539627) 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, 9715 + ... + 9972.

It is an arithmetic number, because the mean of its divisors is an integer number (433136).

2^2539623 is an apocalyptic number.

2539623 is a deficient number, since it is larger than the sum of its proper divisors (925465).

2539623 is a wasteful number, since it uses less digits than its factorization.

2539623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19733.

The product of its digits is 9720, while the sum is 30.

The square root of 2539623 is about 1593.6194652426. The cubic root of 2539623 is about 136.4341482198.

The spelling of 2539623 in words is "two million, five hundred thirty-nine thousand, six hundred twenty-three".