3645672648 has 32 divisors (see below), whose sum is σ = 9117934560. Its totient is φ = 1214723840.

The previous prime is 3645672647. The next prime is 3645672673. The reversal of 3645672648 is 8462765463.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3645672648.

It is not an unprimeable number, because it can be changed into a prime (3645672647) 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, 30736 + ... + 90752.

It is an arithmetic number, because the mean of its divisors is an integer number (284935455).

Almost surely, 2^3645672648 is an apocalyptic number.

It is an amenable number.

3645672648 is an abundant number, since it is smaller than the sum of its proper divisors (5472261912).

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

3645672648 is a wasteful number, since it uses less digits than its factorization.

3645672648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62557 (or 62553 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The square root of 3645672648 is about 60379.4058268214. The cubic root of 3645672648 is about 1539.0730138324.

The spelling of 3645672648 in words is "three billion, six hundred forty-five million, six hundred seventy-two thousand, six hundred forty-eight".