6649616713 has 8 divisors (see below), whose sum is σ = 7000960320. Its totient is φ = 6298409520.

The previous prime is 6649616671. The next prime is 6649616717. The reversal of 6649616713 is 3176169466.

It is a happy number.

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 6649616713 - 2¹³ = 6649608521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6649616717) 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, 74931 + ... + 137527.

It is an arithmetic number, because the mean of its divisors is an integer number (875120040).

Almost surely, 2^6649616713 is an apocalyptic number.

It is an amenable number.

6649616713 is a deficient number, since it is larger than the sum of its proper divisors (351343607).

6649616713 is a wasteful number, since it uses less digits than its factorization.

6649616713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68207.

The product of its digits is 979776, while the sum is 49.

The square root of 6649616713 is about 81545.1820342563. The cubic root of 6649616713 is about 1880.4662259460.

The spelling of 6649616713 in words is "six billion, six hundred forty-nine million, six hundred sixteen thousand, seven hundred thirteen".