2643360691 has 2 divisors, whose sum is σ = 2643360692. Its totient is φ = 2643360690.

The previous prime is 2643360683. The next prime is 2643360703. The reversal of 2643360691 is 1960633462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2643360691 - 2³ = 2643360683 is a prime.

It is not a weakly prime, because it can be changed into another prime (2643360661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321680345 + 1321680346.

It is an arithmetic number, because the mean of its divisors is an integer number (1321680346).

Almost surely, 2^2643360691 is an apocalyptic number.

2643360691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643360691 is an equidigital number, since it uses as much as digits as its factorization.

2643360691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 2643360691 is about 51413.6235933629. The cubic root of 2643360691 is about 1382.6708568500.

The spelling of 2643360691 in words is "two billion, six hundred forty-three million, three hundred sixty thousand, six hundred ninety-one".