85420868 has 12 divisors (see below), whose sum is σ = 160985580. Its totient is φ = 39424992.

The previous prime is 85420859. The next prime is 85420871. The reversal of 85420868 is 86802458.

It can be written as a sum of positive squares in 2 ways, for example, as 25482304 + 59938564 = 5048^2 + 7742^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 821303 + ... + 821406.

It is an arithmetic number, because the mean of its divisors is an integer number (13415465).

Almost surely, 2^85420868 is an apocalyptic number.

It is an amenable number.

85420868 is a deficient number, since it is larger than the sum of its proper divisors (75564712).

85420868 is a wasteful number, since it uses less digits than its factorization.

85420868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642726 (or 1642724 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 85420868 is about 9242.3410454278. The cubic root of 85420868 is about 440.4074531483.

The spelling of 85420868 in words is "eighty-five million, four hundred twenty thousand, eight hundred sixty-eight".