678900085 has 24 divisors (see below), whose sum is σ = 856203264. Its totient is φ = 516727200.

The previous prime is 678900071. The next prime is 678900109. The reversal of 678900085 is 580009876.

It is a happy number.

It is not a de Polignac number, because 678900085 - 2⁷ = 678899957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 589260 + ... + 590410.

It is an arithmetic number, because the mean of its divisors is an integer number (35675136).

Almost surely, 2^678900085 is an apocalyptic number.

It is an amenable number.

678900085 is a deficient number, since it is larger than the sum of its proper divisors (177303179).

678900085 is a wasteful number, since it uses less digits than its factorization.

678900085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 678900085 is about 26055.7111781659. The cubic root of 678900085 is about 878.8915472968.

The spelling of 678900085 in words is "six hundred seventy-eight million, nine hundred thousand, eighty-five".