85712756 has 6 divisors (see below), whose sum is σ = 149997330. Its totient is φ = 42856376.

The previous prime is 85712749. The next prime is 85712771. The reversal of 85712756 is 65721758.

It can be written as a sum of positive squares in only one way, i.e., 56010256 + 29702500 = 7484^2 + 5450^2 .

It is a super-2 number, since 2×85712756² = 14693353082231072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10714091 + ... + 10714098.

It is an arithmetic number, because the mean of its divisors is an integer number (24999555).

Almost surely, 2^85712756 is an apocalyptic number.

It is an amenable number.

85712756 is a deficient number, since it is larger than the sum of its proper divisors (64284574).

85712756 is a wasteful number, since it uses less digits than its factorization.

85712756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428193 (or 21428191 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 85712756 is about 9258.1183833433. The cubic root of 85712756 is about 440.9085153614.

It can be divided in two parts, 85712 and 756, that added together give a palindrome (86468).

The spelling of 85712756 in words is "eighty-five million, seven hundred twelve thousand, seven hundred fifty-six".