85573799 has 4 divisors (see below), whose sum is σ = 85609560. Its totient is φ = 85538040.

The previous prime is 85573771. The next prime is 85573811. The reversal of 85573799 is 99737558.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85573799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85573799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85573759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14012 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (21402390).

Almost surely, 2^85573799 is an apocalyptic number.

85573799 is a deficient number, since it is larger than the sum of its proper divisors (35761).

85573799 is a wasteful number, since it uses less digits than its factorization.

85573799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35760.

The product of its digits is 2381400, while the sum is 53.

The square root of 85573799 is about 9250.6107365946. The cubic root of 85573799 is about 440.6701204168.

The spelling of 85573799 in words is "eighty-five million, five hundred seventy-three thousand, seven hundred ninety-nine".