87073111 has 2 divisors, whose sum is σ = 87073112. Its totient is φ = 87073110.

The previous prime is 87073081. The next prime is 87073139. The reversal of 87073111 is 11137078.

It is an a-pointer prime, because the next prime (87073139) can be obtained adding 87073111 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87073111 - 2⁷ = 87072983 is a prime.

It is equal to p_5057227 and since 87073111 and 5057227 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87073111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87073411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43536555 + 43536556.

It is an arithmetic number, because the mean of its divisors is an integer number (43536556).

Almost surely, 2^87073111 is an apocalyptic number.

87073111 is a deficient number, since it is larger than the sum of its proper divisors (1).

87073111 is an equidigital number, since it uses as much as digits as its factorization.

87073111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 87073111 is about 9331.2973910384. The cubic root of 87073111 is about 443.2288493794.

The spelling of 87073111 in words is "eighty-seven million, seventy-three thousand, one hundred eleven".