6420369384 has 288 divisors, whose sum is σ = 20861699040. Its totient is φ = 1771672320.

The previous prime is 6420369383. The next prime is 6420369391. The reversal of 6420369384 is 4839630246.

6420369384 is a `hidden beast` number, since 6 + 4 + 203 + 69 + 384 = 666.

It is a super-2 number, since 2×6420369384² = 82442286054009078912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6420369383) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9399907 + ... + 9400589.

It is an arithmetic number, because the mean of its divisors is an integer number (72436455).

Almost surely, 2^6420369384 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 6420369384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10430849520).

6420369384 is an abundant number, since it is smaller than the sum of its proper divisors (14441329656).

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

6420369384 is a wasteful number, since it uses less digits than its factorization.

6420369384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 6420369384 is about 80127.2075140523. The cubic root of 6420369384 is about 1858.6031621454.

The spelling of 6420369384 in words is "six billion, four hundred twenty million, three hundred sixty-nine thousand, three hundred eighty-four".