87306765 has 64 divisors (see below), whose sum is σ = 173408256. Its totient is φ = 36525312.

The previous prime is 87306763. The next prime is 87306773. The reversal of 87306765 is 56760378.

It is not a de Polignac number, because 87306765 - 2¹ = 87306763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87306761) 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 in 63 ways as a sum of consecutive naturals, for example, 227764 + ... + 228146.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^87306765 is an apocalyptic number.

It is an amenable number.

87306765 is a deficient number, since it is larger than the sum of its proper divisors (86101491).

87306765 is a wasteful number, since it uses less digits than its factorization.

87306765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 87306765 is about 9343.8089128578. The cubic root of 87306765 is about 443.6249521353.

The spelling of 87306765 in words is "eighty-seven million, three hundred six thousand, seven hundred sixty-five".