2315605 has 8 divisors (see below), whose sum is σ = 2795832. Its totient is φ = 1841088.

The previous prime is 2315597. The next prime is 2315611. The reversal of 2315605 is 5065132.

It is a happy number.

2315605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 128164 + 2187441 = 358^2 + 1479^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2315605 - 2³ = 2315597 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474 + ... + 2203.

It is an arithmetic number, because the mean of its divisors is an integer number (349479).

2^2315605 is an apocalyptic number.

It is an amenable number.

2315605 is a deficient number, since it is larger than the sum of its proper divisors (480227).

2315605 is a wasteful number, since it uses less digits than its factorization.

2315605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2315605 is about 1521.7112078184. The cubic root of 2315605 is about 132.2984713745.

The spelling of 2315605 in words is "two million, three hundred fifteen thousand, six hundred five".