878815064 has 16 divisors (see below), whose sum is σ = 1655040600. Its totient is φ = 437470912.

The previous prime is 878815061. The next prime is 878815079. The reversal of 878815064 is 460518878.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878815061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240149 + ... + 243780.

Almost surely, 2^878815064 is an apocalyptic number.

It is an amenable number.

878815064 is a deficient number, since it is larger than the sum of its proper divisors (776225536).

878815064 is a wasteful number, since it uses less digits than its factorization.

878815064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484162 (or 484158 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The square root of 878815064 is about 29644.8151284504. The cubic root of 878815064 is about 957.8536626182.

The spelling of 878815064 in words is "eight hundred seventy-eight million, eight hundred fifteen thousand, sixty-four".