3722765647 has 2 divisors, whose sum is σ = 3722765648. Its totient is φ = 3722765646.

The previous prime is 3722765611. The next prime is 3722765747. The reversal of 3722765647 is 7465672273.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3722765647 - 2¹¹ = 3722763599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3722765647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3722765047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1861382823 + 1861382824.

It is an arithmetic number, because the mean of its divisors is an integer number (1861382824).

Almost surely, 2^3722765647 is an apocalyptic number.

3722765647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3722765647 is an equidigital number, since it uses as much as digits as its factorization.

3722765647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 49.

The square root of 3722765647 is about 61014.4707999668. The cubic root of 3722765647 is about 1549.8460682375.

The spelling of 3722765647 in words is "three billion, seven hundred twenty-two million, seven hundred sixty-five thousand, six hundred forty-seven".