878331641 has 16 divisors (see below), whose sum is σ = 989596608. Its totient is φ = 772545600.

The previous prime is 878331637. The next prime is 878331679. The reversal of 878331641 is 146133878.

It is a cyclic number.

It is not a de Polignac number, because 878331641 - 2² = 878331637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878331611) 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, 67706 + ... + 79628.

It is an arithmetic number, because the mean of its divisors is an integer number (61849788).

Almost surely, 2^878331641 is an apocalyptic number.

It is an amenable number.

878331641 is a deficient number, since it is larger than the sum of its proper divisors (111264967).

878331641 is a wasteful number, since it uses less digits than its factorization.

878331641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12152.

The product of its digits is 96768, while the sum is 41.

The square root of 878331641 is about 29636.6604225240. The cubic root of 878331641 is about 957.6779967543.

The spelling of 878331641 in words is "eight hundred seventy-eight million, three hundred thirty-one thousand, six hundred forty-one".