87675389 has 2 divisors, whose sum is σ = 87675390. Its totient is φ = 87675388.

The previous prime is 87675383. The next prime is 87675397. The reversal of 87675389 is 98357678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 9211225 = 8858^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 87675389 - 2¹² = 87671293 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 87675389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87675383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43837694 + 43837695.

It is an arithmetic number, because the mean of its divisors is an integer number (43837695).

Almost surely, 2^87675389 is an apocalyptic number.

It is an amenable number.

87675389 is a deficient number, since it is larger than the sum of its proper divisors (1).

87675389 is an equidigital number, since it uses as much as digits as its factorization.

87675389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 53.

The square root of 87675389 is about 9363.5137101411. The cubic root of 87675389 is about 444.2484287967.

The spelling of 87675389 in words is "eighty-seven million, six hundred seventy-five thousand, three hundred eighty-nine".