3605720564 has 12 divisors (see below), whose sum is σ = 6463913988. Its totient is φ = 1758888000.

The previous prime is 3605720563. The next prime is 3605720647. The reversal of 3605720564 is 4650275063.

It can be written as a sum of positive squares in 2 ways, for example, as 66422500 + 3539298064 = 8150^2 + 59492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3605720563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10992887 + ... + 10993214.

It is an arithmetic number, because the mean of its divisors is an integer number (538659499).

Almost surely, 2^3605720564 is an apocalyptic number.

It is an amenable number.

3605720564 is a deficient number, since it is larger than the sum of its proper divisors (2858193424).

3605720564 is a wasteful number, since it uses less digits than its factorization.

3605720564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21986146 (or 21986144 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 3605720564 is about 60047.6524437051. The cubic root of 3605720564 is about 1533.4302355689.

The spelling of 3605720564 in words is "three billion, six hundred five million, seven hundred twenty thousand, five hundred sixty-four".