6811878 has 32 divisors (see below), whose sum is σ = 14349312. Its totient is φ = 2152800.

The previous prime is 6811877. The next prime is 6811879. The reversal of 6811878 is 8781186.

It is an interprime number because it is at equal distance from previous prime (6811877) and next prime (6811879).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811873) 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, 9513 + ... + 10203.

It is an arithmetic number, because the mean of its divisors is an integer number (448416).

Almost surely, 2^6811878 is an apocalyptic number.

6811878 is an abundant number, since it is smaller than the sum of its proper divisors (7537434).

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

6811878 is a wasteful number, since it uses less digits than its factorization.

6811878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 21504, while the sum is 39.

The square root of 6811878 is about 2609.9574709179. The cubic root of 6811878 is about 189.5638935856.

The spelling of 6811878 in words is "six million, eight hundred eleven thousand, eight hundred seventy-eight".