85343857 has 4 divisors (see below), whose sum is σ = 85546996. Its totient is φ = 85140720.

The previous prime is 85343849. The next prime is 85343861. The reversal of 85343857 is 75834358.

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 998001 + 84345856 = 999^2 + 9184^2 .

It is a cyclic number.

It is not a de Polignac number, because 85343857 - 2³ = 85343849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85343807) 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, 100938 + ... + 101779.

It is an arithmetic number, because the mean of its divisors is an integer number (21386749).

Almost surely, 2^85343857 is an apocalyptic number.

It is an amenable number.

85343857 is a deficient number, since it is larger than the sum of its proper divisors (203139).

85343857 is a wasteful number, since it uses less digits than its factorization.

85343857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203138.

The product of its digits is 403200, while the sum is 43.

The square root of 85343857 is about 9238.1738996406. The cubic root of 85343857 is about 440.2750638908.

The spelling of 85343857 in words is "eighty-five million, three hundred forty-three thousand, eight hundred fifty-seven".