706659638 has 16 divisors (see below), whose sum is σ = 1141367760. Its totient is φ = 326908416.

The previous prime is 706659581. The next prime is 706659671. The reversal of 706659638 is 836956607.

706659638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174131 + ... + 178142.

It is an arithmetic number, because the mean of its divisors is an integer number (71335485).

Almost surely, 2^706659638 is an apocalyptic number.

706659638 is a deficient number, since it is larger than the sum of its proper divisors (434708122).

706659638 is a wasteful number, since it uses less digits than its factorization.

706659638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352351.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 706659638 is about 26583.0705148973. The cubic root of 706659638 is about 890.7108901724.

The spelling of 706659638 in words is "seven hundred six million, six hundred fifty-nine thousand, six hundred thirty-eight".