2621843 has 6 divisors (see below), whose sum is σ = 3049956. Its totient is φ = 2247252.

The previous prime is 2621837. The next prime is 2621849. The reversal of 2621843 is 3481262.

It is an interprime number because it is at equal distance from previous prime (2621837) and next prime (2621849).

It is not a de Polignac number, because 2621843 - 2⁶ = 2621779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2621849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26705 + ... + 26802.

It is an arithmetic number, because the mean of its divisors is an integer number (508326).

2^2621843 is an apocalyptic number.

2621843 is a deficient number, since it is larger than the sum of its proper divisors (428113).

2621843 is an equidigital number, since it uses as much as digits as its factorization.

2621843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53521 (or 53514 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 2621843 is about 1619.2106101431. The cubic root of 2621843 is about 137.8908855323.

The spelling of 2621843 in words is "two million, six hundred twenty-one thousand, eight hundred forty-three".