877938643 has 12 divisors (see below), whose sum is σ = 939655728. Its totient is φ = 819992880.

The previous prime is 877938629. The next prime is 877938653. The reversal of 877938643 is 346839778.

877938643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-877938643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (877938623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8505 + ... + 42757.

It is an arithmetic number, because the mean of its divisors is an integer number (78304644).

Almost surely, 2^877938643 is an apocalyptic number.

877938643 is a deficient number, since it is larger than the sum of its proper divisors (61717085).

877938643 is a wasteful number, since it uses less digits than its factorization.

877938643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34362 (or 34343 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 55.

The square root of 877938643 is about 29630.0294127427. The cubic root of 877938643 is about 957.5351419498.

The spelling of 877938643 in words is "eight hundred seventy-seven million, nine hundred thirty-eight thousand, six hundred forty-three".