706670645 has 8 divisors (see below), whose sum is σ = 848239800. Its totient is φ = 565179840.

The previous prime is 706670623. The next prime is 706670663. The reversal of 706670645 is 546076607.

706670645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28536964 + 678133681 = 5342^2 + 26041^2 .

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

It is not a de Polignac number, because 706670645 - 2⁶ = 706670581 is a prime.

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, 2531 + ... + 37679.

It is an arithmetic number, because the mean of its divisors is an integer number (106029975).

Almost surely, 2^706670645 is an apocalyptic number.

It is an amenable number.

706670645 is a deficient number, since it is larger than the sum of its proper divisors (141569155).

706670645 is a wasteful number, since it uses less digits than its factorization.

706670645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39175.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 706670645 is about 26583.2775443511. The cubic root of 706670645 is about 890.7155147485.

The spelling of 706670645 in words is "seven hundred six million, six hundred seventy thousand, six hundred forty-five".