87068857 has 2 divisors, whose sum is σ = 87068858. Its totient is φ = 87068856.

The previous prime is 87068833. The next prime is 87068879. The reversal of 87068857 is 75886078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87067561 + 1296 = 9331^2 + 36^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87068857 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87068857.

It is not a weakly prime, because it can be changed into another prime (87068827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43534428 + 43534429.

It is an arithmetic number, because the mean of its divisors is an integer number (43534429).

Almost surely, 2^87068857 is an apocalyptic number.

It is an amenable number.

87068857 is a deficient number, since it is larger than the sum of its proper divisors (1).

87068857 is an equidigital number, since it uses as much as digits as its factorization.

87068857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 49.

The square root of 87068857 is about 9331.0694456745. The cubic root of 87068857 is about 443.2216312068.

The spelling of 87068857 in words is "eighty-seven million, sixty-eight thousand, eight hundred fifty-seven".