87165775 has 6 divisors (see below), whose sum is σ = 108085592. Its totient is φ = 69732600.

The previous prime is 87165751. The next prime is 87165779. The reversal of 87165775 is 57756178.

It is not a de Polignac number, because 87165775 - 2⁹ = 87165263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87165779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1743291 + ... + 1743340.

Almost surely, 2^87165775 is an apocalyptic number.

87165775 is a deficient number, since it is larger than the sum of its proper divisors (20919817).

87165775 is a wasteful number, since it uses less digits than its factorization.

87165775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486641 (or 3486636 counting only the distinct ones).

The product of its digits is 411600, while the sum is 46.

The square root of 87165775 is about 9336.2612966862. The cubic root of 87165775 is about 443.3860230339.

The spelling of 87165775 in words is "eighty-seven million, one hundred sixty-five thousand, seven hundred seventy-five".