712079221 has 36 divisors (see below), whose sum is σ = 900702828. Its totient is φ = 559173888.

The previous prime is 712079209. The next prime is 712079227. The reversal of 712079221 is 122970217.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 534256996 + 177822225 = 23114^2 + 13335^2 .

It is not a de Polignac number, because 712079221 - 2²¹ = 709982069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712079227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5606860 + ... + 5606986.

It is an arithmetic number, because the mean of its divisors is an integer number (25019523).

Almost surely, 2^712079221 is an apocalyptic number.

It is an amenable number.

712079221 is a deficient number, since it is larger than the sum of its proper divisors (188623607).

712079221 is a wasteful number, since it uses less digits than its factorization.

712079221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 712079221 is about 26684.8125532109. The cubic root of 712079221 is about 892.9821360133.

The spelling of 712079221 in words is "seven hundred twelve million, seventy-nine thousand, two hundred twenty-one".