85775009 has 8 divisors (see below), whose sum is σ = 86373120. Its totient is φ = 85179600.

The previous prime is 85774999. The next prime is 85775017. The reversal of 85775009 is 90057758.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85775009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85775059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158279 + ... + 158819.

It is an arithmetic number, because the mean of its divisors is an integer number (10796640).

Almost surely, 2^85775009 is an apocalyptic number.

It is an amenable number.

85775009 is a deficient number, since it is larger than the sum of its proper divisors (598111).

85775009 is a wasteful number, since it uses less digits than its factorization.

85775009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 85775009 is about 9261.4798493545. The cubic root of 85775009 is about 441.0152331813.

The spelling of 85775009 in words is "eighty-five million, seven hundred seventy-five thousand, nine".