2686947 has 4 divisors (see below), whose sum is σ = 3582600. Its totient is φ = 1791296.

The previous prime is 2686921. The next prime is 2686949. The reversal of 2686947 is 7496862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2686947 - 2⁷ = 2686819 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 2686899 and 2686908.

It is not an unprimeable number, because it can be changed into a prime (2686949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447822 + ... + 447827.

It is an arithmetic number, because the mean of its divisors is an integer number (895650).

2^2686947 is an apocalyptic number.

2686947 is a deficient number, since it is larger than the sum of its proper divisors (895653).

2686947 is an equidigital number, since it uses as much as digits as its factorization.

2686947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895652.

The product of its digits is 145152, while the sum is 42.

The square root of 2686947 is about 1639.1909589795. The cubic root of 2686947 is about 139.0229073921.

It can be divided in two parts, 26 and 86947, that multiplied together give a palindrome (2260622).

The spelling of 2686947 in words is "two million, six hundred eighty-six thousand, nine hundred forty-seven".