609945055 has 8 divisors (see below), whose sum is σ = 733219344. Its totient is φ = 487099200.

The previous prime is 609945053. The next prime is 609945079. The reversal of 609945055 is 550549906.

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

It is not a de Polignac number, because 609945055 - 2¹ = 609945053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609945053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103966 + ... + 109675.

It is an arithmetic number, because the mean of its divisors is an integer number (91652418).

Almost surely, 2^609945055 is an apocalyptic number.

609945055 is a deficient number, since it is larger than the sum of its proper divisors (123274289).

609945055 is a wasteful number, since it uses less digits than its factorization.

609945055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214217.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 609945055 is about 24697.0657163964. The cubic root of 609945055 is about 848.0671444512.

It can be divided in two parts, 60994 and 5055, that added together give a square (66049 = 257²).

The spelling of 609945055 in words is "six hundred nine million, nine hundred forty-five thousand, fifty-five".