85680069 has 16 divisors (see below), whose sum is σ = 116328960. Its totient is φ = 56081520.

The previous prime is 85680059. The next prime is 85680073. The reversal of 85680069 is 96008658.

It is not a de Polignac number, because 85680069 - 2⁷ = 85679941 is a prime.

It is a super-2 number, since 2×85680069² = 14682148447689522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85680069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85680019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87754 + ... + 88724.

It is an arithmetic number, because the mean of its divisors is an integer number (7270560).

Almost surely, 2^85680069 is an apocalyptic number.

It is an amenable number.

85680069 is a deficient number, since it is larger than the sum of its proper divisors (30648891).

85680069 is a wasteful number, since it uses less digits than its factorization.

85680069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 85680069 is about 9256.3528994956. The cubic root of 85680069 is about 440.8524606591.

The spelling of 85680069 in words is "eighty-five million, six hundred eighty thousand, sixty-nine".