6813623 has 4 divisors (see below), whose sum is σ = 6819120. Its totient is φ = 6808128.

The previous prime is 6813613. The next prime is 6813629. The reversal of 6813623 is 3263186.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6813623 - 2⁶ = 6813559 is a prime.

It is a super-2 number, since 2×6813623² = 92850916772258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813629) 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, 86 + ... + 3692.

It is an arithmetic number, because the mean of its divisors is an integer number (1704780).

Almost surely, 2^6813623 is an apocalyptic number.

6813623 is a deficient number, since it is larger than the sum of its proper divisors (5497).

6813623 is a wasteful number, since it uses less digits than its factorization.

6813623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496.

The product of its digits is 5184, while the sum is 29.

The square root of 6813623 is about 2610.2917461464. The cubic root of 6813623 is about 189.5800790758.

The spelling of 6813623 in words is "six million, eight hundred thirteen thousand, six hundred twenty-three".