609347945 has 8 divisors (see below), whose sum is σ = 749052360. Its totient is φ = 475588480.

The previous prime is 609347927. The next prime is 609347957. The reversal of 609347945 is 549743906.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44049769 + 565298176 = 6637^2 + 23776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609347945 - 2²⁰ = 608299369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 609347945.

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, 1486010 + ... + 1486419.

It is an arithmetic number, because the mean of its divisors is an integer number (93631545).

Almost surely, 2^609347945 is an apocalyptic number.

It is an amenable number.

609347945 is a deficient number, since it is larger than the sum of its proper divisors (139704415).

609347945 is a wasteful number, since it uses less digits than its factorization.

609347945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972475.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 609347945 is about 24684.9740733103. The cubic root of 609347945 is about 847.7903136652.

The spelling of 609347945 in words is "six hundred nine million, three hundred forty-seven thousand, nine hundred forty-five".