85768321 has 4 divisors (see below), whose sum is σ = 86732100. Its totient is φ = 84804544.

The previous prime is 85768313. The next prime is 85768327. The reversal of 85768321 is 12386758.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37271025 + 48497296 = 6105^2 + 6964^2 .

It is a cyclic number.

It is not a de Polignac number, because 85768321 - 2³ = 85768313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85768327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481756 + ... + 481933.

It is an arithmetic number, because the mean of its divisors is an integer number (21683025).

Almost surely, 2^85768321 is an apocalyptic number.

It is an amenable number.

85768321 is a deficient number, since it is larger than the sum of its proper divisors (963779).

85768321 is an equidigital number, since it uses as much as digits as its factorization.

85768321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963778.

The product of its digits is 80640, while the sum is 40.

The square root of 85768321 is about 9261.1187769081. The cubic root of 85768321 is about 441.0037706874.

The spelling of 85768321 in words is "eighty-five million, seven hundred sixty-eight thousand, three hundred twenty-one".