5471640720 has 560 divisors, whose sum is σ = 23497996032. Its totient is φ = 1153336320.

The previous prime is 5471640673. The next prime is 5471640739. The reversal of 5471640720 is 270461745.

5471640720 is a `hidden beast` number, since 5 + 4 + 7 + 1 + 640 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 5306605 + ... + 5307635.

Almost surely, 2^5471640720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5471640720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11748998016).

5471640720 is an abundant number, since it is smaller than the sum of its proper divisors (18026355312).

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

5471640720 is a wasteful number, since it uses less digits than its factorization.

5471640720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 5471640720 is about 73970.5395410903. The cubic root of 5471640720 is about 1762.1350552679.

The spelling of 5471640720 in words is "five billion, four hundred seventy-one million, six hundred forty thousand, seven hundred twenty".