678770745 has 16 divisors (see below), whose sum is σ = 1090908672. Its totient is φ = 360385920.

The previous prime is 678770737. The next prime is 678770767. The reversal of 678770745 is 547077876.

It is not a de Polignac number, because 678770745 - 2³ = 678770737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98116 + ... + 104805.

It is an arithmetic number, because the mean of its divisors is an integer number (68181792).

Almost surely, 2^678770745 is an apocalyptic number.

It is an amenable number.

678770745 is a deficient number, since it is larger than the sum of its proper divisors (412137927).

678770745 is a wasteful number, since it uses less digits than its factorization.

678770745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203152.

The product of its (nonzero) digits is 2304960, while the sum is 51.

The square root of 678770745 is about 26053.2290705010. The cubic root of 678770745 is about 878.8357300247.

The spelling of 678770745 in words is "six hundred seventy-eight million, seven hundred seventy thousand, seven hundred forty-five".