6709570221 has 8 divisors (see below), whose sum is σ = 8988493024. Its totient is φ = 4451847120.

The previous prime is 6709570177. The next prime is 6709570223. The reversal of 6709570221 is 1220759076.

6709570221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6709570221 - 2⁹ = 6709569709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6709570221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6709570223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5299186 + ... + 5300451.

It is an arithmetic number, because the mean of its divisors is an integer number (1123561628).

Almost surely, 2^6709570221 is an apocalyptic number.

It is an amenable number.

6709570221 is a deficient number, since it is larger than the sum of its proper divisors (2278922803).

6709570221 is a wasteful number, since it uses less digits than its factorization.

6709570221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10599851.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 6709570221 is about 81911.9662869840. The cubic root of 6709570221 is about 1886.1008067390.

The spelling of 6709570221 in words is "six billion, seven hundred nine million, five hundred seventy thousand, two hundred twenty-one".