6899955 has 16 divisors (see below), whose sum is σ = 11085984. Its totient is φ = 3664640.

The previous prime is 6899951. The next prime is 6899969. The reversal of 6899955 is 5599986.

6899955 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6899955 - 2² = 6899951 is a prime.

6899955 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6899898 and 6899907.

It is not an unprimeable number, because it can be changed into a prime (6899951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3397 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (692874).

Almost surely, 2^6899955 is an apocalyptic number.

6899955 is a deficient number, since it is larger than the sum of its proper divisors (4186029).

6899955 is a wasteful number, since it uses less digits than its factorization.

6899955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926.

The product of its digits is 874800, while the sum is 51.

The square root of 6899955 is about 2626.7765416952. The cubic root of 6899955 is about 190.3774123306.

The spelling of 6899955 in words is "six million, eight hundred ninety-nine thousand, nine hundred fifty-five".