2649847 has 4 divisors (see below), whose sum is σ = 2663496. Its totient is φ = 2636200.

The previous prime is 2649821. The next prime is 2649851. The reversal of 2649847 is 7489462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7489462 = 2 ⋅3744731.

It is a cyclic number.

It is not a de Polignac number, because 2649847 - 2¹⁹ = 2125559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649877) 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, 6529 + ... + 6922.

It is an arithmetic number, because the mean of its divisors is an integer number (665874).

2^2649847 is an apocalyptic number.

2649847 is a deficient number, since it is larger than the sum of its proper divisors (13649).

2649847 is a wasteful number, since it uses less digits than its factorization.

2649847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13648.

The product of its digits is 96768, while the sum is 40.

The square root of 2649847 is about 1627.8350653552. The cubic root of 2649847 is about 138.3800870980.

The spelling of 2649847 in words is "two million, six hundred forty-nine thousand, eight hundred forty-seven".