85577799 has 4 divisors (see below), whose sum is σ = 114103736. Its totient is φ = 57051864.

The previous prime is 85577749. The next prime is 85577801. The reversal of 85577799 is 99777558.

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

It is not a de Polignac number, because 85577799 - 2⁸ = 85577543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85577719) 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, 14262964 + ... + 14262969.

It is an arithmetic number, because the mean of its divisors is an integer number (28525934).

Almost surely, 2^85577799 is an apocalyptic number.

85577799 is a deficient number, since it is larger than the sum of its proper divisors (28525937).

85577799 is a wasteful number, since it uses less digits than its factorization.

85577799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28525936.

The product of its digits is 5556600, while the sum is 57.

The square root of 85577799 is about 9250.8269360096. The cubic root of 85577799 is about 440.6769864320.

The spelling of 85577799 in words is "eighty-five million, five hundred seventy-seven thousand, seven hundred ninety-nine".