2649623 has 4 divisors (see below), whose sum is σ = 2764848. Its totient is φ = 2534400.

The previous prime is 2649613. The next prime is 2649677. The reversal of 2649623 is 3269462.

2649623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2649623 - 2¹² = 2645527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2649623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57578 + ... + 57623.

It is an arithmetic number, because the mean of its divisors is an integer number (691212).

2^2649623 is an apocalyptic number.

2649623 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2649623 is a deficient number, since it is larger than the sum of its proper divisors (115225).

2649623 is a wasteful number, since it uses less digits than its factorization.

2649623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115224.

The product of its digits is 15552, while the sum is 32.

The square root of 2649623 is about 1627.7662608618. The cubic root of 2649623 is about 138.3761877517.

The spelling of 2649623 in words is "two million, six hundred forty-nine thousand, six hundred twenty-three".