6890255 has 32 divisors (see below), whose sum is σ = 9374400. Its totient is φ = 4838400.

The previous prime is 6890249. The next prime is 6890263. The reversal of 6890255 is 5520986.

It is not a de Polignac number, because 6890255 - 2⁴ = 6890239 is a prime.

It is a super-2 number, since 2×6890255² = 94951227930050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112925 + ... + 112985.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

Almost surely, 2^6890255 is an apocalyptic number.

6890255 is a deficient number, since it is larger than the sum of its proper divisors (2484145).

6890255 is a wasteful number, since it uses less digits than its factorization.

6890255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 6890255 is about 2624.9295228634. The cubic root of 6890255 is about 190.2881592400.

The spelling of 6890255 in words is "six million, eight hundred ninety thousand, two hundred fifty-five".