85320799 has 4 divisors (see below), whose sum is σ = 85409640. Its totient is φ = 85231960.

The previous prime is 85320797. The next prime is 85320803. The reversal of 85320799 is 99702358.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 85320799 - 2¹ = 85320797 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 (85320791) 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, 42964 + ... + 44905.

It is an arithmetic number, because the mean of its divisors is an integer number (21352410).

Almost surely, 2^85320799 is an apocalyptic number.

85320799 is a deficient number, since it is larger than the sum of its proper divisors (88841).

85320799 is an equidigital number, since it uses as much as digits as its factorization.

85320799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88840.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 85320799 is about 9236.9258414258. The cubic root of 85320799 is about 440.2354094967.

The spelling of 85320799 in words is "eighty-five million, three hundred twenty thousand, seven hundred ninety-nine".