6855599 has 4 divisors (see below), whose sum is σ = 7216440. Its totient is φ = 6494760.

The previous prime is 6855593. The next prime is 6855631. The reversal of 6855599 is 9955586.

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 6855599 - 2¹² = 6851503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6855593) 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, 180392 + ... + 180429.

It is an arithmetic number, because the mean of its divisors is an integer number (1804110).

Almost surely, 2^6855599 is an apocalyptic number.

6855599 is a deficient number, since it is larger than the sum of its proper divisors (360841).

6855599 is a wasteful number, since it uses less digits than its factorization.

6855599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360840.

The product of its digits is 486000, while the sum is 47.

The square root of 6855599 is about 2618.3198811452. The cubic root of 6855599 is about 189.9685912994.

The spelling of 6855599 in words is "six million, eight hundred fifty-five thousand, five hundred ninety-nine".