878147663 has 4 divisors (see below), whose sum is σ = 881145048. Its totient is φ = 875150280.

The previous prime is 878147653. The next prime is 878147689. The reversal of 878147663 is 366741878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366741878 = 2 ⋅183370939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878147663 is a prime.

It is a super-2 number, since 2×878147663² = 1542286636064723138, 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 (878147653) 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 3 ways as a sum of consecutive naturals, for example, 1498253 + ... + 1498838.

It is an arithmetic number, because the mean of its divisors is an integer number (220286262).

Almost surely, 2^878147663 is an apocalyptic number.

878147663 is a deficient number, since it is larger than the sum of its proper divisors (2997385).

878147663 is a wasteful number, since it uses less digits than its factorization.

878147663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997384.

The product of its digits is 1354752, while the sum is 50.

The square root of 878147663 is about 29633.5563677396. The cubic root of 878147663 is about 957.6111260426.

The spelling of 878147663 in words is "eight hundred seventy-eight million, one hundred forty-seven thousand, six hundred sixty-three".