6899638 has 8 divisors (see below), whose sum is σ = 10495440. Its totient is φ = 3401160.

The previous prime is 6899617. The next prime is 6899657. The reversal of 6899638 is 8369986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6899591 and 6899600.

It is a congruent number.

It is an unprimeable number.

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, 24153 + ... + 24436.

It is an arithmetic number, because the mean of its divisors is an integer number (1311930).

Almost surely, 2^6899638 is an apocalyptic number.

6899638 is a deficient number, since it is larger than the sum of its proper divisors (3595802).

6899638 is a wasteful number, since it uses less digits than its factorization.

6899638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48662.

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

The square root of 6899638 is about 2626.7162008866. The cubic root of 6899638 is about 190.3744968254.

The spelling of 6899638 in words is "six million, eight hundred ninety-nine thousand, six hundred thirty-eight".