605744921 has 4 divisors (see below), whose sum is σ = 611989812. Its totient is φ = 599500032.

The previous prime is 605744911. The next prime is 605744933. The reversal of 605744921 is 129447506.

605744921 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 170563600 + 435181321 = 13060^2 + 20861^2 .

It is a cyclic number.

It is not a de Polignac number, because 605744921 - 2⁶ = 605744857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605744911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3122300 + ... + 3122493.

It is an arithmetic number, because the mean of its divisors is an integer number (152997453).

Almost surely, 2^605744921 is an apocalyptic number.

It is an amenable number.

605744921 is a deficient number, since it is larger than the sum of its proper divisors (6244891).

605744921 is an equidigital number, since it uses as much as digits as its factorization.

605744921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244890.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 605744921 is about 24611.8857668404. The cubic root of 605744921 is about 846.1160380303.

The spelling of 605744921 in words is "six hundred five million, seven hundred forty-four thousand, nine hundred twenty-one".