6420830976 has 108 divisors (see below), whose sum is σ = 21157582992. Its totient is φ = 1834518528.

The previous prime is 6420830971. The next prime is 6420830989. The reversal of 6420830976 is 6790380246.

It is a super-2 number, since 2×6420830976² = 82454140844722225152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6420830971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182931 + ... + 215186.

Almost surely, 2^6420830976 is an apocalyptic number.

It is an amenable number.

6420830976 is an abundant number, since it is smaller than the sum of its proper divisors (14736752016).

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

6420830976 is a wasteful number, since it uses less digits than its factorization.

6420830976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398146 (or 398129 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6420830976 is about 80130.0878322244. The cubic root of 6420830976 is about 1858.6477024587.

The spelling of 6420830976 in words is "six billion, four hundred twenty million, eight hundred thirty thousand, nine hundred seventy-six".