85047665 has 8 divisors (see below), whose sum is σ = 102648168. Its totient is φ = 67644160.

The previous prime is 85047661. The next prime is 85047673. The reversal of 85047665 is 56674058.

It can be written as a sum of positive squares in 4 ways, for example, as 46022656 + 39025009 = 6784^2 + 6247^2 .

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

It is not a de Polignac number, because 85047665 - 2² = 85047661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85047661) 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 7 ways as a sum of consecutive naturals, for example, 48296 + ... + 50025.

It is an arithmetic number, because the mean of its divisors is an integer number (12831021).

Almost surely, 2^85047665 is an apocalyptic number.

It is an amenable number.

85047665 is a deficient number, since it is larger than the sum of its proper divisors (17600503).

85047665 is a wasteful number, since it uses less digits than its factorization.

85047665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98499.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 85047665 is about 9222.1290925686. The cubic root of 85047665 is about 439.7651380882.

The spelling of 85047665 in words is "eighty-five million, forty-seven thousand, six hundred sixty-five".