111878867 has 2 divisors, whose sum is σ = 111878868. Its totient is φ = 111878866.

The previous prime is 111878801. The next prime is 111878881. The reversal of 111878867 is 768878111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111878867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111878167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55939433 + 55939434.

It is an arithmetic number, because the mean of its divisors is an integer number (55939434).

Almost surely, 2^111878867 is an apocalyptic number.

111878867 is a deficient number, since it is larger than the sum of its proper divisors (1).

111878867 is an equidigital number, since it uses as much as digits as its factorization.

111878867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 47.

The square root of 111878867 is about 10577.2806996884. The cubic root of 111878867 is about 481.8546117174.

The spelling of 111878867 in words is "one hundred eleven million, eight hundred seventy-eight thousand, eight hundred sixty-seven".