85680258 has 8 divisors (see below), whose sum is σ = 171360528. Its totient is φ = 28560084.

The previous prime is 85680251. The next prime is 85680299. The reversal of 85680258 is 85208658.

It is a sphenic number, since it is the product of 3 distinct primes.

85680258 is an admirable number.

It is a super-2 number, since 2×85680258² = 14682213221893128, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85680251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7140016 + ... + 7140027.

It is an arithmetic number, because the mean of its divisors is an integer number (21420066).

Almost surely, 2^85680258 is an apocalyptic number.

85680258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85680258 is a wasteful number, since it uses less digits than its factorization.

85680258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280048.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 85680258 is about 9256.3631086945. The cubic root of 85680258 is about 440.8527848148.

Adding to 85680258 its product of nonzero digits (153600), we get a palindrome (85833858).

The spelling of 85680258 in words is "eighty-five million, six hundred eighty thousand, two hundred fifty-eight".