2644791 has 4 divisors (see below), whose sum is σ = 3526392. Its totient is φ = 1763192.

The previous prime is 2644769. The next prime is 2644799. The reversal of 2644791 is 1974462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2644791 - 2⁶ = 2644727 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644799) 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, 440796 + ... + 440801.

It is an arithmetic number, because the mean of its divisors is an integer number (881598).

2^2644791 is an apocalyptic number.

2644791 is a deficient number, since it is larger than the sum of its proper divisors (881601).

2644791 is an equidigital number, since it uses as much as digits as its factorization.

2644791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881600.

The product of its digits is 12096, while the sum is 33.

The square root of 2644791 is about 1626.2813409739. The cubic root of 2644791 is about 138.2920197268.

The spelling of 2644791 in words is "two million, six hundred forty-four thousand, seven hundred ninety-one".