670389340 has 24 divisors (see below), whose sum is σ = 1424782800. Its totient is φ = 264924288.

The previous prime is 670389301. The next prime is 670389371. The reversal of 670389340 is 43983076.

It is a junction number, because it is equal to n+sod(n) for n = 670389293 and 670389302.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 200265 + ... + 203584.

It is an arithmetic number, because the mean of its divisors is an integer number (59365950).

Almost surely, 2^670389340 is an apocalyptic number.

It is an amenable number.

670389340 is an abundant number, since it is smaller than the sum of its proper divisors (754393460).

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

670389340 is a wasteful number, since it uses less digits than its factorization.

670389340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403941 (or 403939 counting only the distinct ones).

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

The square root of 670389340 is about 25891.8778770486. The cubic root of 670389340 is about 875.2034748566.

The spelling of 670389340 in words is "six hundred seventy million, three hundred eighty-nine thousand, three hundred forty".