2601623 has 4 divisors (see below), whose sum is σ = 2606808. Its totient is φ = 2596440.

The previous prime is 2601617. The next prime is 2601661. The reversal of 2601623 is 3261062.

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 2601623 - 2⁴ = 2601607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2601595 and 2601604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748 + ... + 2873.

It is an arithmetic number, because the mean of its divisors is an integer number (651702).

2^2601623 is an apocalyptic number.

2601623 is a deficient number, since it is larger than the sum of its proper divisors (5185).

2601623 is an equidigital number, since it uses as much as digits as its factorization.

2601623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5184.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2601623 is about 1612.9547420805. The cubic root of 2601623 is about 137.5354927659.

Adding to 2601623 its reverse (3261062), we get a palindrome (5862685).

The spelling of 2601623 in words is "two million, six hundred one thousand, six hundred twenty-three".