2056623 has 4 divisors (see below), whose sum is σ = 2742168. Its totient is φ = 1371080.

The previous prime is 2056603. The next prime is 2056627. The reversal of 2056623 is 3266502.

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 2056623 - 2⁹ = 2056111 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 2056593 and 2056602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056627) 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, 342768 + ... + 342773.

It is an arithmetic number, because the mean of its divisors is an integer number (685542).

2^2056623 is an apocalyptic number.

2056623 is a deficient number, since it is larger than the sum of its proper divisors (685545).

2056623 is an equidigital number, since it uses as much as digits as its factorization.

2056623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685544.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2056623 is about 1434.0930932126. The cubic root of 2056623 is about 127.1700658369.

The spelling of 2056623 in words is "two million, fifty-six thousand, six hundred twenty-three".