85603765 has 16 divisors (see below), whose sum is σ = 111445488. Its totient is φ = 62747136.

The previous prime is 85603757. The next prime is 85603781. The reversal of 85603765 is 56730658.

It can be written as a sum of positive squares in 8 ways, for example, as 1661521 + 83942244 = 1289^2 + 9162^2 .

It is a cyclic number.

It is not a de Polignac number, because 85603765 - 2³ = 85603757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4099 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (6965343).

Almost surely, 2^85603765 is an apocalyptic number.

It is an amenable number.

85603765 is a deficient number, since it is larger than the sum of its proper divisors (25841723).

85603765 is a wasteful number, since it uses less digits than its factorization.

85603765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 85603765 is about 9252.2302716696. The cubic root of 85603765 is about 440.7215519683.

It can be divided in two parts, 85603 and 765, that added together give a palindrome (86368).

The spelling of 85603765 in words is "eighty-five million, six hundred three thousand, seven hundred sixty-five".