3720435663 has 16 divisors (see below), whose sum is σ = 5713879040. Its totient is φ = 2109221856.

The previous prime is 3720435661. The next prime is 3720435671. The reversal of 3720435663 is 3665340273.

It is a happy number.

It is not a de Polignac number, because 3720435663 - 2¹ = 3720435661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720435661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694828 + ... + 700161.

It is an arithmetic number, because the mean of its divisors is an integer number (357117440).

Almost surely, 2^3720435663 is an apocalyptic number.

3720435663 is a deficient number, since it is larger than the sum of its proper divisors (1993443377).

3720435663 is a wasteful number, since it uses less digits than its factorization.

3720435663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395126.

The product of its (nonzero) digits is 272160, while the sum is 39.

The square root of 3720435663 is about 60995.3741114849. The cubic root of 3720435663 is about 1549.5226643926.

The spelling of 3720435663 in words is "three billion, seven hundred twenty million, four hundred thirty-five thousand, six hundred sixty-three".