6699838 has 4 divisors (see below), whose sum is σ = 10049760. Its totient is φ = 3349918.

The previous prime is 6699827. The next prime is 6699839. The reversal of 6699838 is 8389966.

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

It is a junction number, because it is equal to n+sod(n) for n = 6699791 and 6699800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6699839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1674958 + ... + 1674961.

It is an arithmetic number, because the mean of its divisors is an integer number (2512440).

Almost surely, 2^6699838 is an apocalyptic number.

6699838 is a deficient number, since it is larger than the sum of its proper divisors (3349922).

6699838 is a wasteful number, since it uses less digits than its factorization.

6699838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349921.

The product of its digits is 559872, while the sum is 49.

The square root of 6699838 is about 2588.4045278897. The cubic root of 6699838 is about 188.5188436720.

The spelling of 6699838 in words is "six million, six hundred ninety-nine thousand, eight hundred thirty-eight".