111870887 has 2 divisors, whose sum is σ = 111870888. Its totient is φ = 111870886.

The previous prime is 111870833. The next prime is 111870911. The reversal of 111870887 is 788078111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111870887 - 2⁶ = 111870823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111870817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55935443 + 55935444.

It is an arithmetic number, because the mean of its divisors is an integer number (55935444).

Almost surely, 2^111870887 is an apocalyptic number.

111870887 is a deficient number, since it is larger than the sum of its proper divisors (1).

111870887 is an equidigital number, since it uses as much as digits as its factorization.

111870887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 41.

The square root of 111870887 is about 10576.9034693525. The cubic root of 111870887 is about 481.8431550073.

The spelling of 111870887 in words is "one hundred eleven million, eight hundred seventy thousand, eight hundred eighty-seven".