678970 has 16 divisors (see below), whose sum is σ = 1251360. Its totient is φ = 265104.

The previous prime is 678959. The next prime is 678971. The reversal of 678970 is 79876.

678970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×678970² = 922000521800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678971) 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, 360 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (78210).

2⁶⁷⁸⁹⁷⁰ is an apocalyptic number.

678970 is a deficient number, since it is larger than the sum of its proper divisors (572390).

678970 is a wasteful number, since it uses less digits than its factorization.

678970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 678970 is about 823.9963592153. The cubic root of 678970 is about 87.8921716485.

It can be divided in two parts, 6789 and 70, that added together give a cube (6859 = 19³).

The spelling of 678970 in words is "six hundred seventy-eight thousand, nine hundred seventy".