6601306013 has 4 divisors (see below), whose sum is σ = 6613976988. Its totient is φ = 6588635040.

The previous prime is 6601306009. The next prime is 6601306031. The reversal of 6601306013 is 3106031066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2284553209 + 4316752804 = 47797^2 + 65702^2 .

It is a cyclic number.

It is not a de Polignac number, because 6601306013 - 2² = 6601306009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601306213) 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, 6334706 + ... + 6335747.

It is an arithmetic number, because the mean of its divisors is an integer number (1653494247).

Almost surely, 2^6601306013 is an apocalyptic number.

It is an amenable number.

6601306013 is a deficient number, since it is larger than the sum of its proper divisors (12670975).

6601306013 is a wasteful number, since it uses less digits than its factorization.

6601306013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12670974.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 6601306013 is about 81248.4216031302. The cubic root of 6601306013 is about 1875.9011739614.

Adding to 6601306013 its reverse (3106031066), we get a palindrome (9707337079).

The spelling of 6601306013 in words is "six billion, six hundred one million, three hundred six thousand, thirteen".