87266587 has 2 divisors, whose sum is σ = 87266588. Its totient is φ = 87266586.

The previous prime is 87266579. The next prime is 87266603. The reversal of 87266587 is 78566278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87266587 - 2³ = 87266579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87266587.

It is not a weakly prime, because it can be changed into another prime (87266527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43633293 + 43633294.

It is an arithmetic number, because the mean of its divisors is an integer number (43633294).

Almost surely, 2^87266587 is an apocalyptic number.

87266587 is a deficient number, since it is larger than the sum of its proper divisors (1).

87266587 is an equidigital number, since it uses as much as digits as its factorization.

87266587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 87266587 is about 9341.6586856939. The cubic root of 87266587 is about 443.5568905970.

The spelling of 87266587 in words is "eighty-seven million, two hundred sixty-six thousand, five hundred eighty-seven".