706768638 has 8 divisors (see below), whose sum is σ = 1413537288. Its totient is φ = 235589544.

The previous prime is 706768603. The next prime is 706768651. The reversal of 706768638 is 836867607.

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

706768638 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58897381 + ... + 58897392.

It is an arithmetic number, because the mean of its divisors is an integer number (176692161).

Almost surely, 2^706768638 is an apocalyptic number.

706768638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

706768638 is a wasteful number, since it uses less digits than its factorization.

706768638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117794778.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 706768638 is about 26585.1206128541. The cubic root of 706768638 is about 890.7566842579.

The spelling of 706768638 in words is "seven hundred six million, seven hundred sixty-eight thousand, six hundred thirty-eight".