85309158 has 16 divisors (see below), whose sum is σ = 186129216. Its totient is φ = 25851240.

The previous prime is 85309153. The next prime is 85309163. The reversal of 85309158 is 85190358.

It is an interprime number because it is at equal distance from previous prime (85309153) and next prime (85309163).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85309153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646216 + ... + 646347.

It is an arithmetic number, because the mean of its divisors is an integer number (11633076).

Almost surely, 2^85309158 is an apocalyptic number.

85309158 is an abundant number, since it is smaller than the sum of its proper divisors (100820058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85309158 is a wasteful number, since it uses less digits than its factorization.

85309158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292579.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 85309158 is about 9236.2956860421. The cubic root of 85309158 is about 440.2153869717.

The spelling of 85309158 in words is "eighty-five million, three hundred nine thousand, one hundred fifty-eight".