613706225 has 48 divisors (see below), whose sum is σ = 863706624. Its totient is φ = 428544000.

The previous prime is 613706209. The next prime is 613706227. The reversal of 613706225 is 522607316.

It is not a de Polignac number, because 613706225 - 2⁴ = 613706209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613706191 and 613706200.

It is not an unprimeable number, because it can be changed into a prime (613706227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1645139 + ... + 1645511.

It is an arithmetic number, because the mean of its divisors is an integer number (17993888).

Almost surely, 2^613706225 is an apocalyptic number.

It is an amenable number.

613706225 is a deficient number, since it is larger than the sum of its proper divisors (250000399).

613706225 is a wasteful number, since it uses less digits than its factorization.

613706225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 613706225 is about 24773.0947804266. The cubic root of 613706225 is about 849.8067496081.

The spelling of 613706225 in words is "six hundred thirteen million, seven hundred six thousand, two hundred twenty-five".