85709012 has 12 divisors (see below), whose sum is σ = 153182400. Its totient is φ = 41942616.

The previous prime is 85709011. The next prime is 85709027. The reversal of 85709012 is 21090758.

It is a super-2 number, since 2×85709012² = 14692069476032288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85709012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85709011) 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, 227762 + ... + 228137.

It is an arithmetic number, because the mean of its divisors is an integer number (12765200).

Almost surely, 2^85709012 is an apocalyptic number.

It is an amenable number.

85709012 is a deficient number, since it is larger than the sum of its proper divisors (67473388).

85709012 is a wasteful number, since it uses less digits than its factorization.

85709012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455950 (or 455948 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 85709012 is about 9257.9161802211. The cubic root of 85709012 is about 440.9020955254.

The spelling of 85709012 in words is "eighty-five million, seven hundred nine thousand, twelve".