878122367 has 4 divisors (see below), whose sum is σ = 889237920. Its totient is φ = 867006816.

The previous prime is 878122351. The next prime is 878122387. The reversal of 878122367 is 763221878.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 878122367 - 2⁴ = 878122351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878122387) 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, 5557658 + ... + 5557815.

It is an arithmetic number, because the mean of its divisors is an integer number (222309480).

Almost surely, 2^878122367 is an apocalyptic number.

878122367 is a deficient number, since it is larger than the sum of its proper divisors (11115553).

878122367 is a wasteful number, since it uses less digits than its factorization.

878122367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11115552.

The product of its digits is 225792, while the sum is 44.

The square root of 878122367 is about 29633.1295512303. The cubic root of 878122367 is about 957.6019309438.

The spelling of 878122367 in words is "eight hundred seventy-eight million, one hundred twenty-two thousand, three hundred sixty-seven".