8477712720 has 200 divisors, whose sum is σ = 29721963744. Its totient is φ = 2239411968.

The previous prime is 8477712673. The next prime is 8477712731. The reversal of 8477712720 is 272177748.

It is a super-2 number, since 2×8477712720² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 687247 + ... + 699473.

Almost surely, 2^8477712720 is an apocalyptic number.

8477712720 is a gapful number since it is divisible by the number (80) 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 8477712720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14860981872).

8477712720 is an abundant number, since it is smaller than the sum of its proper divisors (21244251024).

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

8477712720 is a wasteful number, since it uses less digits than its factorization.

8477712720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359 (or 12344 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 45.

The square root of 8477712720 is about 92074.4954914226. The cubic root of 8477712720 is about 2039.0422840168.

The spelling of 8477712720 in words is "eight billion, four hundred seventy-seven million, seven hundred twelve thousand, seven hundred twenty".