6426623 has 4 divisors (see below), whose sum is σ = 7344720. Its totient is φ = 5508528.

The previous prime is 6426613. The next prime is 6426631. The reversal of 6426623 is 3266246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3266246 = 2 ⋅1633123.

It is a cyclic number.

It is not a de Polignac number, because 6426623 - 2⁶ = 6426559 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426613) 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, 459038 + ... + 459051.

It is an arithmetic number, because the mean of its divisors is an integer number (1836180).

Almost surely, 2^6426623 is an apocalyptic number.

6426623 is a deficient number, since it is larger than the sum of its proper divisors (918097).

6426623 is an equidigital number, since it uses as much as digits as its factorization.

6426623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918096.

The product of its digits is 10368, while the sum is 29.

The square root of 6426623 is about 2535.0784997708. The cubic root of 6426623 is about 185.9206409826.

The spelling of 6426623 in words is "six million, four hundred twenty-six thousand, six hundred twenty-three".