87602565 has 16 divisors (see below), whose sum is σ = 140356800. Its totient is φ = 46657152.

The previous prime is 87602563. The next prime is 87602573. The reversal of 87602565 is 56520678.

It is a happy number.

It is not a de Polignac number, because 87602565 - 2¹ = 87602563 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87602563) 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 15 ways as a sum of consecutive naturals, for example, 8526 + ... + 15744.

It is an arithmetic number, because the mean of its divisors is an integer number (8772300).

Almost surely, 2^87602565 is an apocalyptic number.

It is an amenable number.

87602565 is a deficient number, since it is larger than the sum of its proper divisors (52754235).

87602565 is a wasteful number, since it uses less digits than its factorization.

87602565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8036.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 87602565 is about 9359.6241911735. The cubic root of 87602565 is about 444.1253957565.

It can be divided in two parts, 8760 and 2565, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 87602565 in words is "eighty-seven million, six hundred two thousand, five hundred sixty-five".