3665042720 has 48 divisors (see below), whose sum is σ = 8780643648. Its totient is φ = 1445364480.

The previous prime is 3665042669. The next prime is 3665042729. The reversal of 3665042720 is 272405663.

It is not an unprimeable number, because it can be changed into a prime (3665042729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149954 + ... + 172673.

It is an arithmetic number, because the mean of its divisors is an integer number (182930076).

Almost surely, 2^3665042720 is an apocalyptic number.

It is an amenable number.

3665042720 is an abundant number, since it is smaller than the sum of its proper divisors (5115600928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665042720 is a wasteful number, since it uses less digits than its factorization.

3665042720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322713 (or 322705 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 3665042720 is about 60539.5962986210. The cubic root of 3665042720 is about 1541.7939851153.

The spelling of 3665042720 in words is "three billion, six hundred sixty-five million, forty-two thousand, seven hundred twenty".