678445141 has 16 divisors (see below), whose sum is σ = 795663360. Its totient is φ = 571866480.

The previous prime is 678445123. The next prime is 678445211. The reversal of 678445141 is 141544876.

It is a cyclic number.

It is not a de Polignac number, because 678445141 - 2⁵ = 678445109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678445094 and 678445103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678445441) 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, 24711 + ... + 44356.

It is an arithmetic number, because the mean of its divisors is an integer number (49728960).

Almost surely, 2^678445141 is an apocalyptic number.

It is an amenable number.

678445141 is a deficient number, since it is larger than the sum of its proper divisors (117218219).

678445141 is a wasteful number, since it uses less digits than its factorization.

678445141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69144.

The product of its digits is 107520, while the sum is 40.

The square root of 678445141 is about 26046.9794985906. The cubic root of 678445141 is about 878.6951827197.

The spelling of 678445141 in words is "six hundred seventy-eight million, four hundred forty-five thousand, one hundred forty-one".