85609156 has 6 divisors (see below), whose sum is σ = 149816030. Its totient is φ = 42804576.

The previous prime is 85609133. The next prime is 85609159. The reversal of 85609156 is 65190658.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 46656 = 9250^2 + 216^2 .

It is not an unprimeable number, because it can be changed into a prime (85609159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10701141 + ... + 10701148.

Almost surely, 2^85609156 is an apocalyptic number.

It is an amenable number.

85609156 is a deficient number, since it is larger than the sum of its proper divisors (64206874).

85609156 is a wasteful number, since it uses less digits than its factorization.

85609156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21402293 (or 21402291 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 85609156 is about 9252.5216022444. The cubic root of 85609156 is about 440.7308034306.

The spelling of 85609156 in words is "eighty-five million, six hundred nine thousand, one hundred fifty-six".