3665240263 has 2 divisors, whose sum is σ = 3665240264. Its totient is φ = 3665240262.

The previous prime is 3665240261. The next prime is 3665240287. The reversal of 3665240263 is 3620425663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3665240263 - 2¹ = 3665240261 is a prime.

Together with 3665240261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3665240261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832620131 + 1832620132.

It is an arithmetic number, because the mean of its divisors is an integer number (1832620132).

Almost surely, 2^3665240263 is an apocalyptic number.

3665240263 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665240263 is an equidigital number, since it uses as much as digits as its factorization.

3665240263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 3665240263 is about 60541.2277956105. The cubic root of 3665240263 is about 1541.8216851233.

The spelling of 3665240263 in words is "three billion, six hundred sixty-five million, two hundred forty thousand, two hundred sixty-three".