2549647 has 2 divisors, whose sum is σ = 2549648. Its totient is φ = 2549646.

The previous prime is 2549623. The next prime is 2549669. The reversal of 2549647 is 7469452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2549647 - 2¹¹ = 2547599 is a prime.

It is a Chen prime.

2549647 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2549447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274823 + 1274824.

It is an arithmetic number, because the mean of its divisors is an integer number (1274824).

2^2549647 is an apocalyptic number.

2549647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2549647 is an equidigital number, since it uses as much as digits as its factorization.

2549647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 2549647 is about 1596.7614098543. The cubic root of 2549647 is about 136.6134163620.

The spelling of 2549647 in words is "two million, five hundred forty-nine thousand, six hundred forty-seven".