2641357687 has 2 divisors, whose sum is σ = 2641357688. Its totient is φ = 2641357686.

The previous prime is 2641357681. The next prime is 2641357709. The reversal of 2641357687 is 7867531462.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2641357687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2641357687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2641357681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320678843 + 1320678844.

It is an arithmetic number, because the mean of its divisors is an integer number (1320678844).

Almost surely, 2^2641357687 is an apocalyptic number.

2641357687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641357687 is an equidigital number, since it uses as much as digits as its factorization.

2641357687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 49.

The square root of 2641357687 is about 51394.1405901490. The cubic root of 2641357687 is about 1382.3215294341.

It can be divided in two parts, 26413 and 57687, that added together give a square (84100 = 290²).

The spelling of 2641357687 in words is "two billion, six hundred forty-one million, three hundred fifty-seven thousand, six hundred eighty-seven".