2647646 has 12 divisors (see below), whose sum is σ = 4085928. Its totient is φ = 1286712.

The previous prime is 2647643. The next prime is 2647649. The reversal of 2647646 is 6467462.

It is a happy number.

2647646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2647643) and next prime (2647649).

It is a super-4 number, since 4×2647646⁴ (a number of 27 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2647643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2255 + ... + 3221.

It is an arithmetic number, because the mean of its divisors is an integer number (340494).

2^2647646 is an apocalyptic number.

2647646 is a deficient number, since it is larger than the sum of its proper divisors (1438282).

2647646 is an equidigital number, since it uses as much as digits as its factorization.

2647646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1006 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 2647646 is about 1627.1588736199. The cubic root of 2647646 is about 138.3417630063.

The spelling of 2647646 in words is "two million, six hundred forty-seven thousand, six hundred forty-six".