2613623 has 4 divisors (see below), whose sum is σ = 2669280. Its totient is φ = 2557968.

The previous prime is 2613613. The next prime is 2613647. The reversal of 2613623 is 3263162.

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

It is a cyclic number.

It is not a de Polignac number, because 2613623 - 2⁴ = 2613607 is a prime.

It is a super-2 number, since 2×2613623² = 13662050372258, 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 (2613613) 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, 27758 + ... + 27851.

It is an arithmetic number, because the mean of its divisors is an integer number (667320).

2^2613623 is an apocalyptic number.

2613623 is a deficient number, since it is larger than the sum of its proper divisors (55657).

2613623 is an equidigital number, since it uses as much as digits as its factorization.

2613623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55656.

The product of its digits is 1296, while the sum is 23.

The square root of 2613623 is about 1616.6703436384. The cubic root of 2613623 is about 137.7466295400.

Adding to 2613623 its reverse (3263162), we get a palindrome (5876785).

The spelling of 2613623 in words is "two million, six hundred thirteen thousand, six hundred twenty-three".