878558047 has 8 divisors (see below), whose sum is σ = 891477792. Its totient is φ = 865653600.

The previous prime is 878558041. The next prime is 878558053. The reversal of 878558047 is 740855878.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (878558041) and next prime (878558053).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878558047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878557985 and 878558003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878558041) 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, 166453 + ... + 171649.

It is an arithmetic number, because the mean of its divisors is an integer number (111434724).

Almost surely, 2^878558047 is an apocalyptic number.

878558047 is a deficient number, since it is larger than the sum of its proper divisors (12919745).

878558047 is a wasteful number, since it uses less digits than its factorization.

878558047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649.

The product of its (nonzero) digits is 2508800, while the sum is 52.

The square root of 878558047 is about 29640.4798712841. The cubic root of 878558047 is about 957.7602760085.

The spelling of 878558047 in words is "eight hundred seventy-eight million, five hundred fifty-eight thousand, forty-seven".