605644013 has 4 divisors (see below), whose sum is σ = 652232028. Its totient is φ = 559056000.

The previous prime is 605643991. The next prime is 605644043. The reversal of 605644013 is 310446506.

It is a happy number.

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 407313124 + 198330889 = 20182^2 + 14083^2 .

It is a cyclic number.

It is not a de Polignac number, because 605644013 - 2⁸ = 605643757 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 (605644043) 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, 23293988 + ... + 23294013.

It is an arithmetic number, because the mean of its divisors is an integer number (163058007).

Almost surely, 2^605644013 is an apocalyptic number.

It is an amenable number.

605644013 is a deficient number, since it is larger than the sum of its proper divisors (46588015).

605644013 is a wasteful number, since it uses less digits than its factorization.

605644013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46588014.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 605644013 is about 24609.8356963227. The cubic root of 605644013 is about 846.0690520160.

The spelling of 605644013 in words is "six hundred five million, six hundred forty-four thousand, thirteen".