3645522556 has 24 divisors (see below), whose sum is σ = 6872050080. Its totient is φ = 1682146752.

The previous prime is 3645522527. The next prime is 3645522577. The reversal of 3645522556 is 6552255463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416190 + ... + 424858.

It is an arithmetic number, because the mean of its divisors is an integer number (286335420).

Almost surely, 2^3645522556 is an apocalyptic number.

It is an amenable number.

3645522556 is a deficient number, since it is larger than the sum of its proper divisors (3226527524).

3645522556 is a wasteful number, since it uses less digits than its factorization.

3645522556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16773 (or 16771 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 43.

The square root of 3645522556 is about 60378.1629067993. The cubic root of 3645522556 is about 1539.0518923788.

The spelling of 3645522556 in words is "three billion, six hundred forty-five million, five hundred twenty-two thousand, five hundred fifty-six".