712070221 has 4 divisors (see below), whose sum is σ = 720071100. Its totient is φ = 704069344.

The previous prime is 712070189. The next prime is 712070243. The reversal of 712070221 is 122070217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 479172100 + 232898121 = 21890^2 + 15261^2 .

It is a cyclic number.

It is not a de Polignac number, because 712070221 - 2⁵ = 712070189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 712070192 and 712070201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712070921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000306 + ... + 4000483.

It is an arithmetic number, because the mean of its divisors is an integer number (180017775).

Almost surely, 2^712070221 is an apocalyptic number.

It is an amenable number.

712070221 is a deficient number, since it is larger than the sum of its proper divisors (8000879).

712070221 is an equidigital number, since it uses as much as digits as its factorization.

712070221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000878.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 712070221 is about 26684.6439174294. The cubic root of 712070221 is about 892.9783738509.

The spelling of 712070221 in words is "seven hundred twelve million, seventy thousand, two hundred twenty-one".