6721567470 has 192 divisors, whose sum is σ = 18376787520. Its totient is φ = 1703116800.

The previous prime is 6721567439. The next prime is 6721567487. The reversal of 6721567470 is 747651276.

6721567470 is a `hidden beast` number, since 67 + 21 + 567 + 4 + 7 + 0 = 666.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31855665 + ... + 31855875.

It is an arithmetic number, because the mean of its divisors is an integer number (95712435).

Almost surely, 2^6721567470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6721567470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9188393760).

6721567470 is an abundant number, since it is smaller than the sum of its proper divisors (11655220050).

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

6721567470 is a wasteful number, since it uses less digits than its factorization.

6721567470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 6721567470 is about 81985.1661582752. The cubic root of 6721567470 is about 1887.2243038111.

The spelling of 6721567470 in words is "six billion, seven hundred twenty-one million, five hundred sixty-seven thousand, four hundred seventy".