2640851 has 6 divisors (see below), whose sum is σ = 2708556. Its totient is φ = 2574800.

The previous prime is 2640823. The next prime is 2640853. The reversal of 2640851 is 1580462.

2640851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2640851 - 2¹⁰ = 2639827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2640851.

It is not an unprimeable number, because it can be changed into a prime (2640853) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 896 + ... + 2466.

It is an arithmetic number, because the mean of its divisors is an integer number (451426).

2^2640851 is an apocalyptic number.

2640851 is a deficient number, since it is larger than the sum of its proper divisors (67705).

2640851 is an equidigital number, since it uses as much as digits as its factorization.

2640851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2640851 is about 1625.0695369737. The cubic root of 2640851 is about 138.2233134346.

The spelling of 2640851 in words is "two million, six hundred forty thousand, eight hundred fifty-one".