85723805 has 8 divisors (see below), whose sum is σ = 102927192. Its totient is φ = 68539968.

The previous prime is 85723793. The next prime is 85723831. The reversal of 85723805 is 50832758.

It can be written as a sum of positive squares in 4 ways, for example, as 19838116 + 65885689 = 4454^2 + 8117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85723805 - 2⁴ = 85723789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7727 + ... + 15203.

It is an arithmetic number, because the mean of its divisors is an integer number (12865899).

Almost surely, 2^85723805 is an apocalyptic number.

It is an amenable number.

85723805 is a deficient number, since it is larger than the sum of its proper divisors (17203387).

85723805 is a wasteful number, since it uses less digits than its factorization.

85723805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9775.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 85723805 is about 9258.7150836388. The cubic root of 85723805 is about 440.9274599896.

The spelling of 85723805 in words is "eighty-five million, seven hundred twenty-three thousand, eight hundred five".