678854445 has 16 divisors (see below), whose sum is σ = 1094461632. Its totient is φ = 359290880.

The previous prime is 678854443. The next prime is 678854447. The reversal of 678854445 is 544458876.

It is an interprime number because it is at equal distance from previous prime (678854443) and next prime (678854447).

It is not a de Polignac number, because 678854445 - 2¹ = 678854443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678854443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170772 + ... + 174701.

It is an arithmetic number, because the mean of its divisors is an integer number (68403852).

Almost surely, 2^678854445 is an apocalyptic number.

It is an amenable number.

678854445 is a deficient number, since it is larger than the sum of its proper divisors (415607187).

678854445 is a wasteful number, since it uses less digits than its factorization.

678854445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345612.

The product of its digits is 4300800, while the sum is 51.

The square root of 678854445 is about 26054.8353477814. The cubic root of 678854445 is about 878.8718519543.

The spelling of 678854445 in words is "six hundred seventy-eight million, eight hundred fifty-four thousand, four hundred forty-five".