647076480 has 128 divisors (see below), whose sum is σ = 2152379520. Its totient is φ = 165040128.

The previous prime is 647076467. The next prime is 647076497. The reversal of 647076480 is 84670746.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36834 + ... + 51486.

It is an arithmetic number, because the mean of its divisors is an integer number (16815465).

Almost surely, 2^647076480 is an apocalyptic number.

647076480 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 647076480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076189760).

647076480 is an abundant number, since it is smaller than the sum of its proper divisors (1505303040).

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

647076480 is a wasteful number, since it uses less digits than its factorization.

647076480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14698 (or 14686 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 647076480 is about 25437.6980090573. The cubic root of 647076480 is about 864.9384521902.

The spelling of 647076480 in words is "six hundred forty-seven million, seventy-six thousand, four hundred eighty".