6320661984 has 480 divisors, whose sum is σ = 23168065536. Its totient is φ = 1646023680.

The previous prime is 6320661959. The next prime is 6320661989. The reversal of 6320661984 is 4891660236.

6320661984 is a `hidden beast` number, since 6 + 3 + 20 + 6 + 619 + 8 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6320661989) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29955639 + ... + 29955849.

Almost surely, 2^6320661984 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 6320661984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11584032768).

6320661984 is an abundant number, since it is smaller than the sum of its proper divisors (16847403552).

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

6320661984 is a wasteful number, since it uses less digits than its factorization.

6320661984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 6320661984 is about 79502.5910521160. The cubic root of 6320661984 is about 1848.9316435871.

The spelling of 6320661984 in words is "six billion, three hundred twenty million, six hundred sixty-one thousand, nine hundred eighty-four".