2723623 has 4 divisors (see below), whose sum is σ = 3112720. Its totient is φ = 2334528.

The previous prime is 2723599. The next prime is 2723627. The reversal of 2723623 is 3263272.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2723623 is a prime.

It is a super-2 number, since 2×2723623² = 14836244492258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2723627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194538 + ... + 194551.

It is an arithmetic number, because the mean of its divisors is an integer number (778180).

2^2723623 is an apocalyptic number.

2723623 is a deficient number, since it is larger than the sum of its proper divisors (389097).

2723623 is an equidigital number, since it uses as much as digits as its factorization.

2723623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389096.

The product of its digits is 3024, while the sum is 25.

The square root of 2723623 is about 1650.3402679448. The cubic root of 2723623 is about 139.6525910011.

Adding to 2723623 its reverse (3263272), we get a palindrome (5986895).

The spelling of 2723623 in words is "two million, seven hundred twenty-three thousand, six hundred twenty-three".