2644671 has 8 divisors (see below), whose sum is σ = 3533824. Its totient is φ = 1759320.

The previous prime is 2644669. The next prime is 2644687. The reversal of 2644671 is 1764462.

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

It is not a de Polignac number, because 2644671 - 2¹ = 2644669 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 (2644171) 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, 1890 + ... + 2976.

It is an arithmetic number, because the mean of its divisors is an integer number (441728).

2^2644671 is an apocalyptic number.

2644671 is a deficient number, since it is larger than the sum of its proper divisors (889153).

2644671 is a wasteful number, since it uses less digits than its factorization.

2644671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

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

The square root of 2644671 is about 1626.2444465701. The cubic root of 2644671 is about 138.2899281572.

The spelling of 2644671 in words is "two million, six hundred forty-four thousand, six hundred seventy-one".