6694813 has 4 divisors (see below), whose sum is σ = 6719260. Its totient is φ = 6670368.

The previous prime is 6694769. The next prime is 6694823. The reversal of 6694813 is 3184966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4251844 + 2442969 = 2062^2 + 1563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6694813 is a prime.

It is a super-2 number, since 2×6694813² = 89641042209938, 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 (6694823) 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, 11808 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (1679815).

Almost surely, 2^6694813 is an apocalyptic number.

It is an amenable number.

6694813 is a deficient number, since it is larger than the sum of its proper divisors (24447).

6694813 is a wasteful number, since it uses less digits than its factorization.

6694813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24446.

The product of its digits is 31104, while the sum is 37.

The square root of 6694813 is about 2587.4336706474. The cubic root of 6694813 is about 188.4717010336.

The spelling of 6694813 in words is "six million, six hundred ninety-four thousand, eight hundred thirteen".