85615665 has 8 divisors (see below), whose sum is σ = 136985088. Its totient is φ = 45661680.

The previous prime is 85615643. The next prime is 85615703. The reversal of 85615665 is 56651658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85615665 - 2¹² = 85611569 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2853841 + ... + 2853870.

It is an arithmetic number, because the mean of its divisors is an integer number (17123136).

Almost surely, 2^85615665 is an apocalyptic number.

It is an amenable number.

85615665 is a deficient number, since it is larger than the sum of its proper divisors (51369423).

85615665 is a wasteful number, since it uses less digits than its factorization.

85615665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707719.

The product of its digits is 216000, while the sum is 42.

The square root of 85615665 is about 9252.8733375098. The cubic root of 85615665 is about 440.7419729683.

The spelling of 85615665 in words is "eighty-five million, six hundred fifteen thousand, six hundred sixty-five".