6681155 has 32 divisors (see below), whose sum is σ = 9313920. Its totient is φ = 4561920.

The previous prime is 6681139. The next prime is 6681161. The reversal of 6681155 is 5511866.

It is a happy number.

It is not a de Polignac number, because 6681155 - 2⁴ = 6681139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61241 + ... + 61349.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

Almost surely, 2^6681155 is an apocalyptic number.

6681155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6681155 is a deficient number, since it is larger than the sum of its proper divisors (2632765).

6681155 is a wasteful number, since it uses less digits than its factorization.

6681155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191.

The product of its digits is 7200, while the sum is 32.

The square root of 6681155 is about 2584.7930284648. The cubic root of 6681155 is about 188.3434475646.

It can be divided in two parts, 66811 and 55, that added together give a palindrome (66866).

The spelling of 6681155 in words is "six million, six hundred eighty-one thousand, one hundred fifty-five".