85688516 has 6 divisors (see below), whose sum is σ = 149954910. Its totient is φ = 42844256.

The previous prime is 85688513. The next prime is 85688543. The reversal of 85688516 is 61588658.

It can be written as a sum of positive squares in only one way, i.e., 85192900 + 495616 = 9230^2 + 704^2 .

It is not an unprimeable number, because it can be changed into a prime (85688513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711061 + ... + 10711068.

It is an arithmetic number, because the mean of its divisors is an integer number (24992485).

Almost surely, 2^85688516 is an apocalyptic number.

It is an amenable number.

85688516 is a deficient number, since it is larger than the sum of its proper divisors (64266394).

85688516 is a wasteful number, since it uses less digits than its factorization.

85688516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21422133 (or 21422131 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 85688516 is about 9256.8091694709. The cubic root of 85688516 is about 440.8669477248.

The spelling of 85688516 in words is "eighty-five million, six hundred eighty-eight thousand, five hundred sixteen".