613706625 has 120 divisors (see below), whose sum is σ = 1332003816. Its totient is φ = 280324800.

The previous prime is 613706623. The next prime is 613706641. The reversal of 613706625 is 526607316.

It can be written as a sum of positive squares in 4 ways, for example, as 3814209 + 609892416 = 1953^2 + 24696^2 .

It is not a de Polignac number, because 613706625 - 2¹ = 613706623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 613706625.

It is not an unprimeable number, because it can be changed into a prime (613706623) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 495507 + ... + 496743.

Almost surely, 2^613706625 is an apocalyptic number.

It is an amenable number.

613706625 is an abundant number, since it is smaller than the sum of its proper divisors (718297191).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613706625 is a wasteful number, since it uses less digits than its factorization.

613706625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 613706625 is about 24773.1028537000. The cubic root of 613706625 is about 849.8069342364.

The spelling of 613706625 in words is "six hundred thirteen million, seven hundred six thousand, six hundred twenty-five".