670707678 has 16 divisors (see below), whose sum is σ = 1342239120. Its totient is φ = 223431936.

The previous prime is 670707671. The next prime is 670707683. The reversal of 670707678 is 876707076.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670707671) 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, 23475 + ... + 43502.

It is an arithmetic number, because the mean of its divisors is an integer number (83889945).

Almost surely, 2^670707678 is an apocalyptic number.

670707678 is an abundant number, since it is smaller than the sum of its proper divisors (671531442).

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

670707678 is a wasteful number, since it uses less digits than its factorization.

670707678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68651.

The product of its (nonzero) digits is 691488, while the sum is 48.

The square root of 670707678 is about 25898.0245964823. The cubic root of 670707678 is about 875.3419846344.

The spelling of 670707678 in words is "six hundred seventy million, seven hundred seven thousand, six hundred seventy-eight".