87588289 has 2 divisors, whose sum is σ = 87588290. Its totient is φ = 87588288.

The previous prime is 87588269. The next prime is 87588329. The reversal of 87588289 is 98288578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70224400 + 17363889 = 8380^2 + 4167^2 .

It is a cyclic number.

It is not a de Polignac number, because 87588289 - 2⁵ = 87588257 is a prime.

It is not a weakly prime, because it can be changed into another prime (87588239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43794144 + 43794145.

It is an arithmetic number, because the mean of its divisors is an integer number (43794145).

Almost surely, 2^87588289 is an apocalyptic number.

It is an amenable number.

87588289 is a deficient number, since it is larger than the sum of its proper divisors (1).

87588289 is an equidigital number, since it uses as much as digits as its factorization.

87588289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 55.

The square root of 87588289 is about 9358.8615226426. The cubic root of 87588289 is about 444.1012690710.

The spelling of 87588289 in words is "eighty-seven million, five hundred eighty-eight thousand, two hundred eighty-nine".