85427857 has 16 divisors (see below), whose sum is σ = 93133440. Its totient is φ = 78081408.

The previous prime is 85427827. The next prime is 85427893. The reversal of 85427857 is 75872458.

It is a cyclic number.

It is not a de Polignac number, because 85427857 - 2⁷ = 85427729 is a prime.

It is a super-2 number, since 2×85427857² = 14595837503224898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85427827) 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, 95868 + ... + 96754.

It is an arithmetic number, because the mean of its divisors is an integer number (5820840).

Almost surely, 2^85427857 is an apocalyptic number.

It is an amenable number.

85427857 is a deficient number, since it is larger than the sum of its proper divisors (7705583).

85427857 is a wasteful number, since it uses less digits than its factorization.

85427857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its digits is 627200, while the sum is 46.

The square root of 85427857 is about 9242.7191345404. The cubic root of 85427857 is about 440.4194639672.

The spelling of 85427857 in words is "eighty-five million, four hundred twenty-seven thousand, eight hundred fifty-seven".