2644853 has 2 divisors, whose sum is σ = 2644854. Its totient is φ = 2644852.

The previous prime is 2644849. The next prime is 2644879. The reversal of 2644853 is 3584462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2502724 + 142129 = 1582^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644853 - 2² = 2644849 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322426 + 1322427.

It is an arithmetic number, because the mean of its divisors is an integer number (1322427).

2^2644853 is an apocalyptic number.

It is an amenable number.

2644853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644853 is an equidigital number, since it uses as much as digits as its factorization.

2644853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 32.

The square root of 2644853 is about 1626.3004027547. The cubic root of 2644853 is about 138.2931003463.

The spelling of 2644853 in words is "two million, six hundred forty-four thousand, eight hundred fifty-three".