706643231 has 8 divisors (see below), whose sum is σ = 850097280. Its totient is φ = 573815448.

The previous prime is 706643227. The next prime is 706643243. The reversal of 706643231 is 132346607.

706643231 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 706643231 - 2² = 706643227 is a prime.

It is a super-2 number, since 2×706643231² = 998689311836238722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706643221) 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, 2656421 + ... + 2656686.

It is an arithmetic number, because the mean of its divisors is an integer number (106262160).

Almost surely, 2^706643231 is an apocalyptic number.

706643231 is a deficient number, since it is larger than the sum of its proper divisors (143454049).

706643231 is a wasteful number, since it uses less digits than its factorization.

706643231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313133.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 706643231 is about 26582.7619144437. The cubic root of 706643231 is about 890.7039967044.

Adding to 706643231 its reverse (132346607), we get a palindrome (838989838).

The spelling of 706643231 in words is "seven hundred six million, six hundred forty-three thousand, two hundred thirty-one".