3605520861 has 12 divisors (see below), whose sum is σ = 5245443840. Its totient is φ = 2386387080.

The previous prime is 3605520859. The next prime is 3605520887. The reversal of 3605520861 is 1680255063.

It is not a de Polignac number, because 3605520861 - 2¹ = 3605520859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3605520811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1439805 + ... + 1442306.

It is an arithmetic number, because the mean of its divisors is an integer number (437120320).

Almost surely, 2^3605520861 is an apocalyptic number.

It is an amenable number.

3605520861 is a deficient number, since it is larger than the sum of its proper divisors (1639922979).

3605520861 is a wasteful number, since it uses less digits than its factorization.

3605520861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882256 (or 2882253 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 3605520861 is about 60045.9895496777. The cubic root of 3605520861 is about 1533.4019253447.

The spelling of 3605520861 in words is "three billion, six hundred five million, five hundred twenty thousand, eight hundred sixty-one".