2640941 has 2 divisors, whose sum is σ = 2640942. Its totient is φ = 2640940.

The previous prime is 2640919. The next prime is 2640947. The reversal of 2640941 is 1490462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2592100 + 48841 = 1610^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 2640941 - 2¹⁸ = 2378797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2640941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320470 + 1320471.

It is an arithmetic number, because the mean of its divisors is an integer number (1320471).

2^2640941 is an apocalyptic number.

It is an amenable number.

2640941 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640941 is an equidigital number, since it uses as much as digits as its factorization.

2640941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2640941 is about 1625.0972278605. The cubic root of 2640941 is about 138.2248836300.

The spelling of 2640941 in words is "two million, six hundred forty thousand, nine hundred forty-one".