2644893 has 10 divisors (see below), whose sum is σ = 3951134. Its totient is φ = 1763208.

The previous prime is 2644891. The next prime is 2644903. The reversal of 2644893 is 3984462.

It is a happy number.

2644893 is a `hidden beast` number, since 2 + 644 + 8 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2152089 + 492804 = 1467^2 + 702^2 .

It is not a de Polignac number, because 2644893 - 2¹ = 2644891 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 (2644891) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16246 + ... + 16407.

2^2644893 is an apocalyptic number.

It is an amenable number.

2644893 is a deficient number, since it is larger than the sum of its proper divisors (1306241).

2644893 is an equidigital number, since it uses as much as digits as its factorization.

2644893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32665 (or 32656 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2644893 is about 1626.3127005592. The cubic root of 2644893 is about 138.2937975112.

The spelling of 2644893 in words is "two million, six hundred forty-four thousand, eight hundred ninety-three".