3654765640 has 32 divisors (see below), whose sum is σ = 8298675000. Its totient is φ = 1448492544.

The previous prime is 3654765617. The next prime is 3654765641. The reversal of 3654765640 is 465674563.

3654765640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3654686116 + 79524 = 60454^2 + 282^2 .

It is not an unprimeable number, because it can be changed into a prime (3654765641) 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, 414765 + ... + 423484.

Almost surely, 2^3654765640 is an apocalyptic number.

It is an amenable number.

3654765640 is an abundant number, since it is smaller than the sum of its proper divisors (4643909360).

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

3654765640 is a wasteful number, since it uses less digits than its factorization.

3654765640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838369 (or 838365 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 46.

The square root of 3654765640 is about 60454.6577196497. The cubic root of 3654765640 is about 1540.3515304782.

The spelling of 3654765640 in words is "three billion, six hundred fifty-four million, seven hundred sixty-five thousand, six hundred forty".