3605064561 has 12 divisors (see below), whose sum is σ = 5951217792. Its totient is φ = 2060036856.

The previous prime is 3605064539. The next prime is 3605064601. The reversal of 3605064561 is 1654605063.

3605064561 is a `hidden beast` number, since 3 + 6 + 0 + 5 + 0 + 645 + 6 + 1 = 666.

It is not a de Polignac number, because 3605064561 - 2²⁷ = 3470846833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3605064361) 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, 28611561 + ... + 28611686.

It is an arithmetic number, because the mean of its divisors is an integer number (495934816).

Almost surely, 2^3605064561 is an apocalyptic number.

It is an amenable number.

3605064561 is a deficient number, since it is larger than the sum of its proper divisors (2346153231).

3605064561 is a wasteful number, since it uses less digits than its factorization.

3605064561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57223260 (or 57223257 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 3605064561 is about 60042.1898418104. The cubic root of 3605064561 is about 1533.3372355866.

The spelling of 3605064561 in words is "three billion, six hundred five million, sixty-four thousand, five hundred sixty-one".