6386661613 has 8 divisors (see below), whose sum is σ = 6404756832. Its totient is φ = 6368593296.

The previous prime is 6386661601. The next prime is 6386661667. The reversal of 6386661613 is 3161666836.

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 6386661613 - 2²⁹ = 5849790701 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 (6386661683) 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, 526806 + ... + 538792.

It is an arithmetic number, because the mean of its divisors is an integer number (800594604).

Almost surely, 2^6386661613 is an apocalyptic number.

It is an amenable number.

6386661613 is a deficient number, since it is larger than the sum of its proper divisors (18095219).

6386661613 is a wasteful number, since it uses less digits than its factorization.

6386661613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13451.

The product of its digits is 559872, while the sum is 46.

The square root of 6386661613 is about 79916.5916002428. The cubic root of 6386661613 is about 1855.3448174392.

The spelling of 6386661613 in words is "six billion, three hundred eighty-six million, six hundred sixty-one thousand, six hundred thirteen".