6681771 has 24 divisors (see below), whose sum is σ = 10343424. Its totient is φ = 4305960.

The previous prime is 6681761. The next prime is 6681781. The reversal of 6681771 is 1771866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6681761) and next prime (6681781).

It is not a de Polignac number, because 6681771 - 2¹¹ = 6679723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6681721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7090 + ... + 7976.

It is an arithmetic number, because the mean of its divisors is an integer number (430976).

Almost surely, 2^6681771 is an apocalyptic number.

6681771 is a deficient number, since it is larger than the sum of its proper divisors (3661653).

6681771 is an equidigital number, since it uses as much as digits as its factorization.

6681771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 921 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 6681771 is about 2584.9121841950. The cubic root of 6681771 is about 188.3492357853.

The spelling of 6681771 in words is "six million, six hundred eighty-one thousand, seven hundred seventy-one".