6497757480 has 128 divisors (see below), whose sum is σ = 20205158400. Its totient is φ = 1669920000.

The previous prime is 6497757463. The next prime is 6497757491. The reversal of 6497757480 is 847577946.

It is a self number, because there is not a number n which added to its sum of digits gives 6497757480.

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, 930241 + ... + 937199.

It is an arithmetic number, because the mean of its divisors is an integer number (157852800).

Almost surely, 2^6497757480 is an apocalyptic number.

6497757480 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 6497757480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10102579200).

6497757480 is an abundant number, since it is smaller than the sum of its proper divisors (13707400920).

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

6497757480 is a wasteful number, since it uses less digits than its factorization.

6497757480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255 (or 7251 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The square root of 6497757480 is about 80608.6687645938. The cubic root of 6497757480 is about 1866.0409324166.

The spelling of 6497757480 in words is "six billion, four hundred ninety-seven million, seven hundred fifty-seven thousand, four hundred eighty".