87681127 has 2 divisors, whose sum is σ = 87681128. Its totient is φ = 87681126.

The previous prime is 87681079. The next prime is 87681137. The reversal of 87681127 is 72118678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87681127 - 2¹¹ = 87679079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87681127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87681137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43840563 + 43840564.

It is an arithmetic number, because the mean of its divisors is an integer number (43840564).

Almost surely, 2^87681127 is an apocalyptic number.

87681127 is a deficient number, since it is larger than the sum of its proper divisors (1).

87681127 is an equidigital number, since it uses as much as digits as its factorization.

87681127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 40.

The square root of 87681127 is about 9363.8201071998. The cubic root of 87681127 is about 444.2581200069.

The spelling of 87681127 in words is "eighty-seven million, six hundred eighty-one thousand, one hundred twenty-seven".