6215695668 has 432 divisors, whose sum is σ = 20635130880. Its totient is φ = 1562416128.

The previous prime is 6215695649. The next prime is 6215695691. The reversal of 6215695668 is 8665965126.

6215695668 is a `hidden beast` number, since 6 + 2 + 15 + 69 + 566 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 78679653 + ... + 78679731.

Almost surely, 2^6215695668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6215695668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10317565440).

6215695668 is an abundant number, since it is smaller than the sum of its proper divisors (14419435212).

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

6215695668 is a wasteful number, since it uses less digits than its factorization.

6215695668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 224 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 6215695668 is about 78839.6833326974. The cubic root of 6215695668 is about 1838.6394782699.

The spelling of 6215695668 in words is "six billion, two hundred fifteen million, six hundred ninety-five thousand, six hundred sixty-eight".