85000004 has 6 divisors (see below), whose sum is σ = 148750014. Its totient is φ = 42500000.

The previous prime is 84999979. The next prime is 85000007. The reversal of 85000004 is 40000058.

It can be written as a sum of positive squares in only one way, i.e., 82446400 + 2553604 = 9080^2 + 1598^2 .

It is not an unprimeable number, because it can be changed into a prime (85000007) 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 as a sum of consecutive naturals, namely, 10624997 + ... + 10625004.

It is an arithmetic number, because the mean of its divisors is an integer number (24791669).

Almost surely, 2^85000004 is an apocalyptic number.

It is an amenable number.

85000004 is a deficient number, since it is larger than the sum of its proper divisors (63750010).

85000004 is a wasteful number, since it uses less digits than its factorization.

85000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21250005 (or 21250003 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 85000004 is about 9219.5446742233. The cubic root of 85000004 is about 439.6829741128.

The spelling of 85000004 in words is "eighty-five million, four", and thus it is an aban number.