2641647 has 8 divisors (see below), whose sum is σ = 3729456. Its totient is φ = 1657472.

The previous prime is 2641637. The next prime is 2641649. The reversal of 2641647 is 7461462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2641647 - 2⁴ = 2641631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2641649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25848 + ... + 25949.

It is an arithmetic number, because the mean of its divisors is an integer number (466182).

2^2641647 is an apocalyptic number.

2641647 is a deficient number, since it is larger than the sum of its proper divisors (1087809).

2641647 is a wasteful number, since it uses less digits than its factorization.

2641647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51817.

The product of its digits is 8064, while the sum is 30.

The square root of 2641647 is about 1625.3144311179. The cubic root of 2641647 is about 138.2371997039.

The spelling of 2641647 in words is "two million, six hundred forty-one thousand, six hundred forty-seven".