6721695936 has 168 divisors, whose sum is σ = 19548500400. Its totient is φ = 2208061440.

The previous prime is 6721695919. The next prime is 6721695941. The reversal of 6721695936 is 6395961276.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17279230 + ... + 17279618.

Almost surely, 2^6721695936 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 6721695936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9774250200).

6721695936 is an abundant number, since it is smaller than the sum of its proper divisors (12826804464).

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

6721695936 is a wasteful number, since it uses less digits than its factorization.

6721695936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 754 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 6721695936 is about 81985.9496255303. The cubic root of 6721695936 is about 1887.2363269299.

The spelling of 6721695936 in words is "six billion, seven hundred twenty-one million, six hundred ninety-five thousand, nine hundred thirty-six".