87027917 has 2 divisors, whose sum is σ = 87027918. Its totient is φ = 87027916.

The previous prime is 87027911. The next prime is 87027949. The reversal of 87027917 is 71972078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86471401 + 556516 = 9299^2 + 746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87027917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87027911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43513958 + 43513959.

It is an arithmetic number, because the mean of its divisors is an integer number (43513959).

Almost surely, 2^87027917 is an apocalyptic number.

It is an amenable number.

87027917 is a deficient number, since it is larger than the sum of its proper divisors (1).

87027917 is an equidigital number, since it uses as much as digits as its factorization.

87027917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 87027917 is about 9328.8754413380. The cubic root of 87027917 is about 443.1521523332.

The spelling of 87027917 in words is "eighty-seven million, twenty-seven thousand, nine hundred seventeen".