878605381 has 8 divisors (see below), whose sum is σ = 891253440. Its totient is φ = 866006592.

The previous prime is 878605349. The next prime is 878605411. The reversal of 878605381 is 183506878.

878605381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878605381 - 2⁵ = 878605349 is a prime.

It is a super-2 number, since 2×878605381² = 1543894831044310322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878605331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24381 + ... + 48493.

It is an arithmetic number, because the mean of its divisors is an integer number (111406680).

Almost surely, 2^878605381 is an apocalyptic number.

It is an amenable number.

878605381 is a deficient number, since it is larger than the sum of its proper divisors (12648059).

878605381 is a wasteful number, since it uses less digits than its factorization.

878605381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24635.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 878605381 is about 29641.2783293838. The cubic root of 878605381 is about 957.7774760902. Note that the first 3 decimals are identical.

The spelling of 878605381 in words is "eight hundred seventy-eight million, six hundred five thousand, three hundred eighty-one".