6216666650 has 24 divisors (see below), whose sum is σ = 11570997504. Its totient is φ = 2484946800.

The previous prime is 6216666611. The next prime is 6216666679. The reversal of 6216666650 is 566666126.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31289 + ... + 115811.

It is an arithmetic number, because the mean of its divisors is an integer number (482124896).

Almost surely, 2^6216666650 is an apocalyptic number.

6216666650 is a deficient number, since it is larger than the sum of its proper divisors (5354330854).

6216666650 is a wasteful number, since it uses less digits than its factorization.

6216666650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86006 (or 86001 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 6216666650 is about 78845.8410444077. The cubic root of 6216666650 is about 1838.7352140211.

The spelling of 6216666650 in words is "six billion, two hundred sixteen million, six hundred sixty-six thousand, six hundred fifty".