85647723 has 16 divisors (see below), whose sum is σ = 130690560. Its totient is φ = 48874176.

The previous prime is 85647719. The next prime is 85647743. The reversal of 85647723 is 32774658.

It is not a de Polignac number, because 85647723 - 2² = 85647719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85647743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15618 + ... + 20376.

It is an arithmetic number, because the mean of its divisors is an integer number (8168160).

Almost surely, 2^85647723 is an apocalyptic number.

85647723 is a deficient number, since it is larger than the sum of its proper divisors (45042837).

85647723 is a wasteful number, since it uses less digits than its factorization.

85647723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626.

The product of its digits is 282240, while the sum is 42.

The square root of 85647723 is about 9254.6055021270. The cubic root of 85647723 is about 440.7969766993.

The spelling of 85647723 in words is "eighty-five million, six hundred forty-seven thousand, seven hundred twenty-three".