6484507920 has 160 divisors (see below), whose sum is σ = 24366119040. Its totient is φ = 1571996160.

The previous prime is 6484507907. The next prime is 6484507951. The reversal of 6484507920 is 297054846.

It is a happy number.

6484507920 is a `hidden beast` number, since 64 + 84 + 507 + 9 + 2 + 0 = 666.

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, 112699 + ... + 160218.

It is an arithmetic number, because the mean of its divisors is an integer number (152288244).

Almost surely, 2^6484507920 is an apocalyptic number.

6484507920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6484507920 is an abundant number, since it is smaller than the sum of its proper divisors (17881611120).

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

6484507920 is a wasteful number, since it uses less digits than its factorization.

6484507920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272950 (or 272938 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 6484507920 is about 80526.4423652256. The cubic root of 6484507920 is about 1864.7717229769.

The spelling of 6484507920 in words is "six billion, four hundred eighty-four million, five hundred seven thousand, nine hundred twenty".