2678747 has 2 divisors, whose sum is σ = 2678748. Its totient is φ = 2678746.

The previous prime is 2678743. The next prime is 2678749. The reversal of 2678747 is 7478762.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2678747 - 2² = 2678743 is a prime.

Together with 2678749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2678743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339373 + 1339374.

It is an arithmetic number, because the mean of its divisors is an integer number (1339374).

2^2678747 is an apocalyptic number.

2678747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2678747 is an equidigital number, since it uses as much as digits as its factorization.

2678747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 41.

The square root of 2678747 is about 1636.6878138484. The cubic root of 2678747 is about 138.8813403423.

The spelling of 2678747 in words is "two million, six hundred seventy-eight thousand, seven hundred forty-seven".