6664210650 has 36 divisors (see below), whose sum is σ = 17904513822. Its totient is φ = 1777122720.

The previous prime is 6664210621. The next prime is 6664210673. The reversal of 6664210650 is 560124666.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5596685721 + 1067524929 = 74811^2 + 32673^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7404229 + ... + 7405128.

Almost surely, 2^6664210650 is an apocalyptic number.

6664210650 is an abundant number, since it is smaller than the sum of its proper divisors (11240303172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6664210650 is a wasteful number, since it uses less digits than its factorization.

6664210650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809375 (or 14809367 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6664210650 is about 81634.6167382441. The cubic root of 6664210650 is about 1881.8409093574.

The spelling of 6664210650 in words is "six billion, six hundred sixty-four million, two hundred ten thousand, six hundred fifty".