85865457 has 4 divisors (see below), whose sum is σ = 114487280. Its totient is φ = 57243636.

The previous prime is 85865431. The next prime is 85865477. The reversal of 85865457 is 75456858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85865457 - 2¹¹ = 85863409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85865407) 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, 14310907 + ... + 14310912.

It is an arithmetic number, because the mean of its divisors is an integer number (28621820).

Almost surely, 2^85865457 is an apocalyptic number.

It is an amenable number.

85865457 is a deficient number, since it is larger than the sum of its proper divisors (28621823).

85865457 is a wasteful number, since it uses less digits than its factorization.

85865457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28621822.

The product of its digits is 1344000, while the sum is 48.

The square root of 85865457 is about 9266.3615837070. The cubic root of 85865457 is about 441.1701925873.

The spelling of 85865457 in words is "eighty-five million, eight hundred sixty-five thousand, four hundred fifty-seven".