85615653 has 16 divisors (see below), whose sum is σ = 121118720. Its totient is φ = 53642736.

The previous prime is 85615643. The next prime is 85615703. The reversal of 85615653 is 35651658.

It is not a de Polignac number, because 85615653 - 2⁶ = 85615589 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 (85615613) 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 15 ways as a sum of consecutive naturals, for example, 1326 + ... + 13152.

It is an arithmetic number, because the mean of its divisors is an integer number (7569920).

Almost surely, 2^85615653 is an apocalyptic number.

It is an amenable number.

85615653 is a deficient number, since it is larger than the sum of its proper divisors (35503067).

85615653 is a wasteful number, since it uses less digits than its factorization.

85615653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11976.

The product of its digits is 108000, while the sum is 39.

The square root of 85615653 is about 9252.8726890626. The cubic root of 85615653 is about 440.7419523767.

It can be divided in two parts, 85615 and 653, that added together give a palindrome (86268).

The spelling of 85615653 in words is "eighty-five million, six hundred fifteen thousand, six hundred fifty-three".