6889155 has 64 divisors (see below), whose sum is σ = 13977600. Its totient is φ = 2878848.

The previous prime is 6889151. The next prime is 6889171. The reversal of 6889155 is 5519886.

6889155 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 6889155 - 2² = 6889151 is a prime.

It is a super-2 number, since 2×6889155² = 94920913228050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6889151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66834 + ... + 66936.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

Almost surely, 2^6889155 is an apocalyptic number.

6889155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6889155 is an abundant number, since it is smaller than the sum of its proper divisors (7088445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6889155 is a wasteful number, since it uses less digits than its factorization.

6889155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 131 counting only the distinct ones).

The product of its digits is 86400, while the sum is 42.

The square root of 6889155 is about 2624.7199850651. The cubic root of 6889155 is about 190.2780324685.

The spelling of 6889155 in words is "six million, eight hundred eighty-nine thousand, one hundred fifty-five".