6881957 has 6 divisors (see below), whose sum is σ = 7310898. Its totient is φ = 6476864.

The previous prime is 6881951. The next prime is 6881977. The reversal of 6881957 is 7591886.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2825761 + 4056196 = 1681^2 + 2014^2 .

It is not a de Polignac number, because 6881957 - 2⁶ = 6881893 is a prime.

It is a super-2 number, since 2×6881957² = 94722664299698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11618 + ... + 12195.

It is an arithmetic number, because the mean of its divisors is an integer number (1218483).

Almost surely, 2^6881957 is an apocalyptic number.

It is an amenable number.

6881957 is a deficient number, since it is larger than the sum of its proper divisors (428941).

6881957 is a wasteful number, since it uses less digits than its factorization.

6881957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23847 (or 23830 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 6881957 is about 2623.3484328240. The cubic root of 6881957 is about 190.2117399376.

The spelling of 6881957 in words is "six million, eight hundred eighty-one thousand, nine hundred fifty-seven".