2686761 has 24 divisors (see below), whose sum is σ = 4839744. Its totient is φ = 1395360.

The previous prime is 2686759. The next prime is 2686777. The reversal of 2686761 is 1676862.

It is a happy number.

It is not a de Polignac number, because 2686761 - 2¹ = 2686759 is a prime.

It is a super-2 number, since 2×2686761² = 14437369342242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2686751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1246 + ... + 2631.

It is an arithmetic number, because the mean of its divisors is an integer number (201656).

2^2686761 is an apocalyptic number.

2686761 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2686761 is a deficient number, since it is larger than the sum of its proper divisors (2152983).

2686761 is a wasteful number, since it uses less digits than its factorization.

2686761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901 (or 3898 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 2686761 is about 1639.1342226920. The cubic root of 2686761 is about 139.0196994318.

The spelling of 2686761 in words is "two million, six hundred eighty-six thousand, seven hundred sixty-one".