2643862 has 16 divisors (see below), whose sum is σ = 4343472. Its totient is φ = 1199520.

The previous prime is 2643853. The next prime is 2643871. The reversal of 2643862 is 2683462.

2643862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2643853) and next prime (2643871).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753 + ... + 2419.

It is an arithmetic number, because the mean of its divisors is an integer number (271467).

2^2643862 is an apocalyptic number.

2643862 is a deficient number, since it is larger than the sum of its proper divisors (1699610).

2643862 is a wasteful number, since it uses less digits than its factorization.

2643862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743.

The product of its digits is 13824, while the sum is 31.

The square root of 2643862 is about 1625.9956949513. The cubic root of 2643862 is about 138.2758258408.

The spelling of 2643862 in words is "two million, six hundred forty-three thousand, eight hundred sixty-two".