6881157 has 12 divisors (see below), whose sum is σ = 9993984. Its totient is φ = 4562280.

The previous prime is 6881131. The next prime is 6881167. The reversal of 6881157 is 7511886.

It is not a de Polignac number, because 6881157 - 2⁶ = 6881093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283 + ... + 3720.

It is an arithmetic number, because the mean of its divisors is an integer number (832832).

Almost surely, 2^6881157 is an apocalyptic number.

It is an amenable number.

6881157 is a deficient number, since it is larger than the sum of its proper divisors (3112827).

6881157 is a wasteful number, since it uses less digits than its factorization.

6881157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200 (or 4197 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 6881157 is about 2623.1959515065. The cubic root of 6881157 is about 190.2043692004.

It can be divided in two parts, 68 and 81157, that added together give a square (81225 = 285²).

The spelling of 6881157 in words is "six million, eight hundred eighty-one thousand, one hundred fifty-seven".