6813407 has 4 divisors (see below), whose sum is σ = 6837936. Its totient is φ = 6788880.

The previous prime is 6813403. The next prime is 6813409. The reversal of 6813407 is 7043186.

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 6813407 - 2² = 6813403 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 6813407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813403) 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, 11843 + ... + 12404.

It is an arithmetic number, because the mean of its divisors is an integer number (1709484).

Almost surely, 2^6813407 is an apocalyptic number.

6813407 is a deficient number, since it is larger than the sum of its proper divisors (24529).

6813407 is a wasteful number, since it uses less digits than its factorization.

6813407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24528.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6813407 is about 2610.2503711330. The cubic root of 6813407 is about 189.5780757495.

The spelling of 6813407 in words is "six million, eight hundred thirteen thousand, four hundred seven".