87368573 has 2 divisors, whose sum is σ = 87368574. Its totient is φ = 87368572.

The previous prime is 87368551. The next prime is 87368597. The reversal of 87368573 is 37586378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51811204 + 35557369 = 7198^2 + 5963^2 .

It is a cyclic number.

It is not a de Polignac number, because 87368573 - 2⁸ = 87368317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87368543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43684286 + 43684287.

It is an arithmetic number, because the mean of its divisors is an integer number (43684287).

Almost surely, 2^87368573 is an apocalyptic number.

It is an amenable number.

87368573 is a deficient number, since it is larger than the sum of its proper divisors (1).

87368573 is an equidigital number, since it uses as much as digits as its factorization.

87368573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 47.

The square root of 87368573 is about 9347.1157583503. The cubic root of 87368573 is about 443.7296141399.

The spelling of 87368573 in words is "eighty-seven million, three hundred sixty-eight thousand, five hundred seventy-three".