2686949 has 2 divisors, whose sum is σ = 2686950. Its totient is φ = 2686948.

The previous prime is 2686921. The next prime is 2686973. The reversal of 2686949 is 9496862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 174724 = 1585^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 2686949 - 2⁸ = 2686693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2686979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343474 + 1343475.

It is an arithmetic number, because the mean of its divisors is an integer number (1343475).

2^2686949 is an apocalyptic number.

It is an amenable number.

2686949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686949 is an equidigital number, since it uses as much as digits as its factorization.

2686949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 2686949 is about 1639.1915690364. The cubic root of 2686949 is about 139.0229418855.

The spelling of 2686949 in words is "two million, six hundred eighty-six thousand, nine hundred forty-nine".