680545086 has 48 divisors (see below), whose sum is σ = 1490600880. Its totient is φ = 207018240.

The previous prime is 680545081. The next prime is 680545093.

680545086 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×680545086² = 926283228157494792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680545081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86476 + ... + 94016.

It is an arithmetic number, because the mean of its divisors is an integer number (31054185).

Almost surely, 2^680545086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680545086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745300440).

680545086 is an abundant number, since it is smaller than the sum of its proper divisors (810055794).

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

680545086 is a wasteful number, since it uses less digits than its factorization.

680545086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7661 (or 7648 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 680545086 is about 26087.2590741151. The cubic root of 680545086 is about 879.6008373925.

The spelling of 680545086 in words is "six hundred eighty million, five hundred forty-five thousand, eighty-six".