6399060480 has 320 divisors, whose sum is σ = 23269403520. Its totient is φ = 1665957888.

The previous prime is 6399060461. The next prime is 6399060509. The reversal of 6399060480 is 840609936.

6399060480 is a `hidden beast` number, since 6 + 39 + 9 + 0 + 604 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2971084 + ... + 2973236.

It is an arithmetic number, because the mean of its divisors is an integer number (72716886).

Almost surely, 2^6399060480 is an apocalyptic number.

6399060480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6399060480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11634701760).

6399060480 is an abundant number, since it is smaller than the sum of its proper divisors (16870343040).

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

6399060480 is a wasteful number, since it uses less digits than its factorization.

6399060480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 6399060480 is about 79994.1277844818. The cubic root of 6399060480 is about 1856.5446776337.

The spelling of 6399060480 in words is "six billion, three hundred ninety-nine million, sixty thousand, four hundred eighty".