6547495680 has 360 divisors, whose sum is σ = 25562419344. Its totient is φ = 1586995200.

The previous prime is 6547495639. The next prime is 6547495681. The reversal of 6547495680 is 865947456.

6547495680 is a `hidden beast` number, since 6 + 5 + 4 + 74 + 9 + 568 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6547495681) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1137610 + ... + 1143350.

Almost surely, 2^6547495680 is an apocalyptic number.

6547495680 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 6547495680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12781209672).

6547495680 is an abundant number, since it is smaller than the sum of its proper divisors (19014923664).

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

6547495680 is a wasteful number, since it uses less digits than its factorization.

6547495680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The square root of 6547495680 is about 80916.5970614187. The cubic root of 6547495680 is about 1870.7901452732.

The spelling of 6547495680 in words is "six billion, five hundred forty-seven million, four hundred ninety-five thousand, six hundred eighty".