677845164645 has 192 divisors, whose sum is σ = 1350155589120. Its totient is φ = 311670374400.

The previous prime is 677845164629. The next prime is 677845164649. The reversal of 677845164645 is 546461548776.

677845164645 is a `hidden beast` number, since 6 + 7 + 78 + 4 + 516 + 4 + 6 + 45 = 666.

677845164645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 677845164645 - 2⁴ = 677845164629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677845164649) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 115729557 + ... + 115735413.

It is an arithmetic number, because the mean of its divisors is an integer number (7032060360).

Almost surely, 2^677845164645 is an apocalyptic number.

It is an amenable number.

677845164645 is a deficient number, since it is larger than the sum of its proper divisors (672310424475).

677845164645 is a wasteful number, since it uses less digits than its factorization.

677845164645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076 (or 6073 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 63.

The spelling of 677845164645 in words is "six hundred seventy-seven billion, eight hundred forty-five million, one hundred sixty-four thousand, six hundred forty-five".