6805155 has 16 divisors (see below), whose sum is σ = 12443904. Its totient is φ = 3110880.

The previous prime is 6805121. The next prime is 6805157. The reversal of 6805155 is 5515086.

It is a happy number.

6805155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6805155 - 2⁸ = 6804899 is a prime.

6805155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6805157) 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, 32301 + ... + 32510.

It is an arithmetic number, because the mean of its divisors is an integer number (777744).

Almost surely, 2^6805155 is an apocalyptic number.

6805155 is a deficient number, since it is larger than the sum of its proper divisors (5638749).

6805155 is a wasteful number, since it uses less digits than its factorization.

6805155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64826.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 6805155 is about 2608.6692009529. The cubic root of 6805155 is about 189.5015095384.

The spelling of 6805155 in words is "six million, eight hundred five thousand, one hundred fifty-five".