85408868 has 6 divisors (see below), whose sum is σ = 149465526. Its totient is φ = 42704432.

The previous prime is 85408849. The next prime is 85408871. The reversal of 85408868 is 86880458.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 30382144 = 7418^2 + 5512^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10676105 + ... + 10676112.

It is an arithmetic number, because the mean of its divisors is an integer number (24910921).

Almost surely, 2^85408868 is an apocalyptic number.

It is an amenable number.

85408868 is a deficient number, since it is larger than the sum of its proper divisors (64056658).

85408868 is a wasteful number, since it uses less digits than its factorization.

85408868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21352221 (or 21352219 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 85408868 is about 9241.6918364551. The cubic root of 85408868 is about 440.3868292381.

The spelling of 85408868 in words is "eighty-five million, four hundred eight thousand, eight hundred sixty-eight".