655444579 has 4 divisors (see below), whose sum is σ = 660228984. Its totient is φ = 650660176.

The previous prime is 655444541. The next prime is 655444591. The reversal of 655444579 is 975444556.

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

It is a cyclic number.

It is not a de Polignac number, because 655444579 - 2¹⁵ = 655411811 is a prime.

It is a super-2 number, since 2×655444579² = 859215192280974482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655444379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2391997 + ... + 2392270.

It is an arithmetic number, because the mean of its divisors is an integer number (165057246).

Almost surely, 2^655444579 is an apocalyptic number.

655444579 is a deficient number, since it is larger than the sum of its proper divisors (4784405).

655444579 is a wasteful number, since it uses less digits than its factorization.

655444579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784404.

The product of its digits is 3024000, while the sum is 49.

The square root of 655444579 is about 25601.6518802987. The cubic root of 655444579 is about 868.6510026834.

The spelling of 655444579 in words is "six hundred fifty-five million, four hundred forty-four thousand, five hundred seventy-nine".