670906642 has 32 divisors (see below), whose sum is σ = 1201888512. Its totient is φ = 274627584.

The previous prime is 670906637. The next prime is 670906693. The reversal of 670906642 is 246609076.

It is a junction number, because it is equal to n+sod(n) for n = 670906595 and 670906604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331618 + ... + 333634.

It is an arithmetic number, because the mean of its divisors is an integer number (37559016).

Almost surely, 2^670906642 is an apocalyptic number.

670906642 is a deficient number, since it is larger than the sum of its proper divisors (530981870).

670906642 is a wasteful number, since it uses less digits than its factorization.

670906642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 670906642 is about 25901.8656084847. The cubic root of 670906642 is about 875.4285321869.

The spelling of 670906642 in words is "six hundred seventy million, nine hundred six thousand, six hundred forty-two".