85166774 has 32 divisors (see below), whose sum is σ = 160088832. Its totient is φ = 33012000.

The previous prime is 85166771. The next prime is 85166777. The reversal of 85166774 is 47766158.

It is an interprime number because it is at equal distance from previous prime (85166771) and next prime (85166777).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85166771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31184 + ... + 33804.

It is an arithmetic number, because the mean of its divisors is an integer number (5002776).

Almost surely, 2^85166774 is an apocalyptic number.

85166774 is a deficient number, since it is larger than the sum of its proper divisors (74922058).

85166774 is a wasteful number, since it uses less digits than its factorization.

85166774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852.

The product of its digits is 282240, while the sum is 44.

The square root of 85166774 is about 9228.5846152051. The cubic root of 85166774 is about 439.9703389096.

The spelling of 85166774 in words is "eighty-five million, one hundred sixty-six thousand, seven hundred seventy-four".