605221865 has 8 divisors (see below), whose sum is σ = 726401088. Its totient is φ = 484087600.

The previous prime is 605221849. The next prime is 605221873. The reversal of 605221865 is 568122506.

605221865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 605221865 - 2⁴ = 605221849 is a prime.

It is a Duffinian number.

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, 37994 + ... + 51516.

It is an arithmetic number, because the mean of its divisors is an integer number (90800136).

Almost surely, 2^605221865 is an apocalyptic number.

It is an amenable number.

605221865 is a deficient number, since it is larger than the sum of its proper divisors (121179223).

605221865 is a wasteful number, since it uses less digits than its factorization.

605221865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22479.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 605221865 is about 24601.2573865646. The cubic root of 605221865 is about 845.8724297059.

The spelling of 605221865 in words is "six hundred five million, two hundred twenty-one thousand, eight hundred sixty-five".