5649623 has 4 divisors (see below), whose sum is σ = 6456720. Its totient is φ = 4842528.

The previous prime is 5649619. The next prime is 5649647. The reversal of 5649623 is 3269465.

5649623 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 3269465 = 5 ⋅653893.

It is a cyclic number.

It is not a de Polignac number, because 5649623 - 2² = 5649619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649673) 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, 403538 + ... + 403551.

It is an arithmetic number, because the mean of its divisors is an integer number (1614180).

Almost surely, 2^5649623 is an apocalyptic number.

5649623 is a deficient number, since it is larger than the sum of its proper divisors (807097).

5649623 is an equidigital number, since it uses as much as digits as its factorization.

5649623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807096.

The product of its digits is 38880, while the sum is 35.

The square root of 5649623 is about 2376.8935609320. The cubic root of 5649623 is about 178.1037878916.

The spelling of 5649623 in words is "five million, six hundred forty-nine thousand, six hundred twenty-three".