85143686 has 8 divisors (see below), whose sum is σ = 127795800. Its totient is φ = 42545088.

The previous prime is 85143673. The next prime is 85143689. The reversal of 85143686 is 68634158.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85143689) 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, 9131 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (15974475).

Almost surely, 2^85143686 is an apocalyptic number.

85143686 is a deficient number, since it is larger than the sum of its proper divisors (42652114).

85143686 is a wasteful number, since it uses less digits than its factorization.

85143686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26758.

The product of its digits is 138240, while the sum is 41.

The square root of 85143686 is about 9227.3336343713. Note that the first 3 decimals coincide. The cubic root of 85143686 is about 439.9305778903.

The spelling of 85143686 in words is "eighty-five million, one hundred forty-three thousand, six hundred eighty-six".