87706873 has 2 divisors, whose sum is σ = 87706874. Its totient is φ = 87706872.

The previous prime is 87706823. The next prime is 87706901. The reversal of 87706873 is 37860778.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86918329 + 788544 = 9323^2 + 888^2 .

It is a cyclic number.

It is not a de Polignac number, because 87706873 - 2¹⁷ = 87575801 is a prime.

It is not a weakly prime, because it can be changed into another prime (87706813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43853436 + 43853437.

It is an arithmetic number, because the mean of its divisors is an integer number (43853437).

Almost surely, 2^87706873 is an apocalyptic number.

It is an amenable number.

87706873 is a deficient number, since it is larger than the sum of its proper divisors (1).

87706873 is an equidigital number, since it uses as much as digits as its factorization.

87706873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 87706873 is about 9365.1947657270. The cubic root of 87706873 is about 444.3015985776.

The spelling of 87706873 in words is "eighty-seven million, seven hundred six thousand, eight hundred seventy-three".