361606513 has 4 divisors (see below), whose sum is σ = 371379700. Its totient is φ = 351833328.

The previous prime is 361606489. The next prime is 361606517. The reversal of 361606513 is 315606163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315606163 = 59 ⋅5349257.

It can be written as a sum of positive squares in 2 ways, for example, as 265429264 + 96177249 = 16292^2 + 9807^2 .

It is a cyclic number.

It is not a de Polignac number, because 361606513 - 2⁹ = 361606001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361606517) 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, 4886538 + ... + 4886611.

It is an arithmetic number, because the mean of its divisors is an integer number (92844925).

Almost surely, 2^361606513 is an apocalyptic number.

It is an amenable number.

361606513 is a deficient number, since it is larger than the sum of its proper divisors (9773187).

361606513 is an equidigital number, since it uses as much as digits as its factorization.

361606513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773186.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 361606513 is about 19015.9541701173. The cubic root of 361606513 is about 712.4352750479.

The spelling of 361606513 in words is "three hundred sixty-one million, six hundred six thousand, five hundred thirteen".