85306688 has 14 divisors (see below), whose sum is σ = 169280586. Its totient is φ = 42653312.

The previous prime is 85306681. The next prime is 85306693. The reversal of 85306688 is 88660358.

It can be written as a sum of positive squares in only one way, i.e., 78996544 + 6310144 = 8888^2 + 2512^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85306681) 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, 666395 + ... + 666522.

Almost surely, 2^85306688 is an apocalyptic number.

It is an amenable number.

85306688 is a deficient number, since it is larger than the sum of its proper divisors (83973898).

85306688 is a wasteful number, since it uses less digits than its factorization.

85306688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332929 (or 1332919 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 85306688 is about 9236.1619734606. The cubic root of 85306688 is about 440.2111383364.

The spelling of 85306688 in words is "eighty-five million, three hundred six thousand, six hundred eighty-eight".