2649647 has 16 divisors (see below), whose sum is σ = 3558912. Its totient is φ = 1905120.

The previous prime is 2649613. The next prime is 2649677. The reversal of 2649647 is 7469462.

It is not a de Polignac number, because 2649647 - 2⁸ = 2649391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2649647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323 + ... + 2324.

It is an arithmetic number, because the mean of its divisors is an integer number (222432).

2^2649647 is an apocalyptic number.

2649647 is a deficient number, since it is larger than the sum of its proper divisors (909265).

2649647 is a wasteful number, since it uses less digits than its factorization.

2649647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678.

The product of its digits is 72576, while the sum is 38.

The square root of 2649647 is about 1627.7736329109. The cubic root of 2649647 is about 138.3766055493.

The spelling of 2649647 in words is "two million, six hundred forty-nine thousand, six hundred forty-seven".