877641378 has 16 divisors (see below), whose sum is σ = 1760930496. Its totient is φ = 291605840.

The previous prime is 877641377. The next prime is 877641397. The reversal of 877641378 is 873146778.

It is a self number, because there is not a number n which added to its sum of digits gives 877641378.

It is not an unprimeable number, because it can be changed into a prime (877641377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233301 + ... + 237032.

It is an arithmetic number, because the mean of its divisors is an integer number (110058156).

Almost surely, 2^877641378 is an apocalyptic number.

877641378 is an abundant number, since it is smaller than the sum of its proper divisors (883289118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

877641378 is a wasteful number, since it uses less digits than its factorization.

877641378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470649.

The product of its digits is 1580544, while the sum is 51.

The square root of 877641378 is about 29625.0127088580. The cubic root of 877641378 is about 957.4270577770.

The spelling of 877641378 in words is "eight hundred seventy-seven million, six hundred forty-one thousand, three hundred seventy-eight".