87090587 has 2 divisors, whose sum is σ = 87090588. Its totient is φ = 87090586.

The previous prime is 87090551. The next prime is 87090613. The reversal of 87090587 is 78509078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87090587 - 2²⁶ = 19981723 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (87090187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43545293 + 43545294.

It is an arithmetic number, because the mean of its divisors is an integer number (43545294).

Almost surely, 2^87090587 is an apocalyptic number.

87090587 is a deficient number, since it is larger than the sum of its proper divisors (1).

87090587 is an equidigital number, since it uses as much as digits as its factorization.

87090587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 87090587 is about 9332.2337626101. The cubic root of 87090587 is about 443.2585001297.

The spelling of 87090587 in words is "eighty-seven million, ninety thousand, five hundred eighty-seven".