85149668 has 12 divisors (see below), whose sum is σ = 157777452. Its totient is φ = 40070400.

The previous prime is 85149667. The next prime is 85149671. The reversal of 85149668 is 86694158.

It can be written as a sum of positive squares in 2 ways, for example, as 70694464 + 14455204 = 8408^2 + 3802^2 .

It is not an unprimeable number, because it can be changed into a prime (85149667) 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 3 ways as a sum of consecutive naturals, for example, 626033 + ... + 626168.

It is an arithmetic number, because the mean of its divisors is an integer number (13148121).

Almost surely, 2^85149668 is an apocalyptic number.

It is an amenable number.

85149668 is a deficient number, since it is larger than the sum of its proper divisors (72627784).

85149668 is a wasteful number, since it uses less digits than its factorization.

85149668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252222 (or 1252220 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 85149668 is about 9227.6577743217. The cubic root of 85149668 is about 439.9408804867.

The spelling of 85149668 in words is "eighty-five million, one hundred forty-nine thousand, six hundred sixty-eight".