609705545 has 4 divisors (see below), whose sum is σ = 731646660. Its totient is φ = 487764432.

The previous prime is 609705521. The next prime is 609705583. The reversal of 609705545 is 545507906.

609705545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 309619216 + 300086329 = 17596^2 + 17323^2 .

It is a cyclic number.

It is not a de Polignac number, because 609705545 - 2¹⁴ = 609689161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60970550 + ... + 60970559.

It is an arithmetic number, because the mean of its divisors is an integer number (182911665).

Almost surely, 2^609705545 is an apocalyptic number.

It is an amenable number.

609705545 is a deficient number, since it is larger than the sum of its proper divisors (121941115).

609705545 is a wasteful number, since it uses less digits than its factorization.

609705545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121941114.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 609705545 is about 24692.2162836794. The cubic root of 609705545 is about 847.9561250773.

The spelling of 609705545 in words is "six hundred nine million, seven hundred five thousand, five hundred forty-five".