605653 has 4 divisors (see below), whose sum is σ = 622060. Its totient is φ = 589248.

The previous prime is 605641. The next prime is 605687. The reversal of 605653 is 356506.

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 381924 + 223729 = 618^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 605653 - 2¹⁷ = 474581 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 (605603) 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, 8148 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (155515).

2⁶⁰⁵⁶⁵³ is an apocalyptic number.

It is an amenable number.

605653 is a deficient number, since it is larger than the sum of its proper divisors (16407).

605653 is a wasteful number, since it uses less digits than its factorization.

605653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 605653 is about 778.2371103976. The cubic root of 605653 is about 84.6073236864.

The spelling of 605653 in words is "six hundred five thousand, six hundred fifty-three".