3645575647 has 24 divisors (see below), whose sum is σ = 4528123776. Its totient is φ = 2919370608.

The previous prime is 3645575629. The next prime is 3645575651. The reversal of 3645575647 is 7465755463.

It is not a de Polignac number, because 3645575647 - 2¹¹ = 3645573599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3645575594 and 3645575603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645575677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10848 + ... + 86074.

It is an arithmetic number, because the mean of its divisors is an integer number (188671824).

Almost surely, 2^3645575647 is an apocalyptic number.

3645575647 is a deficient number, since it is larger than the sum of its proper divisors (882548129).

3645575647 is a wasteful number, since it uses less digits than its factorization.

3645575647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75307 (or 75300 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 52.

The square root of 3645575647 is about 60378.6025591848. The cubic root of 3645575647 is about 1539.0593635901.

The spelling of 3645575647 in words is "three billion, six hundred forty-five million, five hundred seventy-five thousand, six hundred forty-seven".