678400070 has 16 divisors (see below), whose sum is σ = 1222518960. Its totient is φ = 271049184.

The previous prime is 678400067. The next prime is 678400109. The reversal of 678400070 is 70004876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29585 + ... + 47244.

It is an arithmetic number, because the mean of its divisors is an integer number (76407435).

Almost surely, 2^678400070 is an apocalyptic number.

678400070 is a deficient number, since it is larger than the sum of its proper divisors (544118890).

678400070 is a wasteful number, since it uses less digits than its factorization.

678400070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77719.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 678400070 is about 26046.1142975301. The cubic root of 678400070 is about 878.6757242328.

The spelling of 678400070 in words is "six hundred seventy-eight million, four hundred thousand, seventy".