706645453321 has 4 divisors (see below), whose sum is σ = 706659398932. Its totient is φ = 706631507712.

The previous prime is 706645453289. The next prime is 706645453361. The reversal of 706645453321 is 123354546607.

It is a happy number.

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 214632991225 + 492012462096 = 463285^2 + 701436^2 .

It is a cyclic number.

It is not a de Polignac number, because 706645453321 - 2⁵ = 706645453289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706645453361) 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, 6896520 + ... + 6998233.

It is an arithmetic number, because the mean of its divisors is an integer number (176664849733).

Almost surely, 2^706645453321 is an apocalyptic number.

It is an amenable number.

706645453321 is a deficient number, since it is larger than the sum of its proper divisors (13945611).

706645453321 is a wasteful number, since it uses less digits than its factorization.

706645453321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13945610.

The product of its (nonzero) digits is 1814400, while the sum is 46.

Adding to 706645453321 its reverse (123354546607), we get a palindrome (829999999928).

The spelling of 706645453321 in words is "seven hundred six billion, six hundred forty-five million, four hundred fifty-three thousand, three hundred twenty-one".