3645645487 has 16 divisors (see below), whose sum is σ = 4022112672. Its totient is φ = 3276881920.

The previous prime is 3645645481. The next prime is 3645645491. The reversal of 3645645487 is 7845465463.

3645645487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3645645487 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 (3645645481) 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, 382593 + ... + 392005.

It is an arithmetic number, because the mean of its divisors is an integer number (251382042).

Almost surely, 2^3645645487 is an apocalyptic number.

3645645487 is a deficient number, since it is larger than the sum of its proper divisors (376467185).

3645645487 is a wasteful number, since it uses less digits than its factorization.

3645645487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9818.

The product of its digits is 9676800, while the sum is 52.

The square root of 3645645487 is about 60379.1809069981. The cubic root of 3645645487 is about 1539.0691916877.

The spelling of 3645645487 in words is "three billion, six hundred forty-five million, six hundred forty-five thousand, four hundred eighty-seven".