85072665 has 8 divisors (see below), whose sum is σ = 136116288. Its totient is φ = 45372080.

The previous prime is 85072621. The next prime is 85072681. The reversal of 85072665 is 56627058.

It is a happy number.

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

It is not a de Polignac number, because 85072665 - 2¹¹ = 85070617 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, 2835741 + ... + 2835770.

It is an arithmetic number, because the mean of its divisors is an integer number (17014536).

Almost surely, 2^85072665 is an apocalyptic number.

It is an amenable number.

85072665 is a deficient number, since it is larger than the sum of its proper divisors (51043623).

85072665 is a wasteful number, since it uses less digits than its factorization.

85072665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671519.

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

The square root of 85072665 is about 9223.4844283492. The cubic root of 85072665 is about 439.8082239325.

The spelling of 85072665 in words is "eighty-five million, seventy-two thousand, six hundred sixty-five".