647230613 has 8 divisors (see below), whose sum is σ = 708934680. Its totient is φ = 588152320.

The previous prime is 647230589. The next prime is 647230627. The reversal of 647230613 is 316032746.

It can be written as a sum of positive squares in 4 ways, for example, as 134977924 + 512252689 = 11618^2 + 22633^2 .

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 647230613 - 2²⁰ = 646182037 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 647230613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647230643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655928 + ... + 656913.

It is an arithmetic number, because the mean of its divisors is an integer number (88616835).

Almost surely, 2^647230613 is an apocalyptic number.

It is an amenable number.

647230613 is a deficient number, since it is larger than the sum of its proper divisors (61704067).

647230613 is a wasteful number, since it uses less digits than its factorization.

647230613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312887.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 647230613 is about 25440.7274463605. The cubic root of 647230613 is about 865.0071225760.

The spelling of 647230613 in words is "six hundred forty-seven million, two hundred thirty thousand, six hundred thirteen".