2640640003 has 2 divisors, whose sum is σ = 2640640004. Its totient is φ = 2640640002.

The previous prime is 2640639983. The next prime is 2640640031. The reversal of 2640640003 is 3000460462.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2640640003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2640640003.

It is not a weakly prime, because it can be changed into another prime (2640640033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320320001 + 1320320002.

It is an arithmetic number, because the mean of its divisors is an integer number (1320320002).

Almost surely, 2^2640640003 is an apocalyptic number.

2640640003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640640003 is an equidigital number, since it uses as much as digits as its factorization.

2640640003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2640640003 is about 51387.1579579957. The cubic root of 2640640003 is about 1382.1963211097.

The spelling of 2640640003 in words is "two billion, six hundred forty million, six hundred forty thousand, three".