85155740 has 12 divisors (see below), whose sum is σ = 178827096. Its totient is φ = 34062288.

The previous prime is 85155713. The next prime is 85155743. The reversal of 85155740 is 4755158.

It is a self number, because there is not a number n which added to its sum of digits gives 85155740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85155743) 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, 2128874 + ... + 2128913.

It is an arithmetic number, because the mean of its divisors is an integer number (14902258).

Almost surely, 2^85155740 is an apocalyptic number.

It is an amenable number.

85155740 is an abundant number, since it is smaller than the sum of its proper divisors (93671356).

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

85155740 is a wasteful number, since it uses less digits than its factorization.

85155740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257796 (or 4257794 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 85155740 is about 9227.9867793577. The cubic root of 85155740 is about 439.9513375935.

The spelling of 85155740 in words is "eighty-five million, one hundred fifty-five thousand, seven hundred forty".