670000406728 has 32 divisors (see below), whose sum is σ = 1263847276800. Its totient is φ = 332976181312.

The previous prime is 670000406717. The next prime is 670000406749. The reversal of 670000406728 is 827604000076.

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, 3054426 + ... + 3266422.

It is an arithmetic number, because the mean of its divisors is an integer number (39495227400).

Almost surely, 2^670000406728 is an apocalyptic number.

It is an amenable number.

670000406728 is a deficient number, since it is larger than the sum of its proper divisors (593846870072).

670000406728 is a wasteful number, since it uses less digits than its factorization.

670000406728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214389 (or 214385 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 670000406728 in words is "six hundred seventy billion, four hundred six thousand, seven hundred twenty-eight".