6640850714 has 8 divisors (see below), whose sum is σ = 9983074548. Its totient is φ = 3313159200.

The previous prime is 6640850693. The next prime is 6640850717. The reversal of 6640850714 is 4170580466.

It can be written as a sum of positive squares in 2 ways, for example, as 6631333489 + 9517225 = 81433^2 + 3085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6640850717) 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, 3631937 + ... + 3633764.

Almost surely, 2^6640850714 is an apocalyptic number.

6640850714 is a deficient number, since it is larger than the sum of its proper divisors (3342223834).

6640850714 is a wasteful number, since it uses less digits than its factorization.

6640850714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266160.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 6640850714 is about 81491.4149711490. The cubic root of 6640850714 is about 1879.6395410101.

The spelling of 6640850714 in words is "six billion, six hundred forty million, eight hundred fifty thousand, seven hundred fourteen".