680081400 has 96 divisors (see below), whose sum is σ = 2342521200. Its totient is φ = 181353600.

The previous prime is 680081387. The next prime is 680081401. The reversal of 680081400 is 4180086.

680081400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680081401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57571 + ... + 68370.

Almost surely, 2^680081400 is an apocalyptic number.

680081400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680081400 is an abundant number, since it is smaller than the sum of its proper divisors (1662439800).

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

680081400 is a wasteful number, since it uses less digits than its factorization.

680081400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125966 (or 125951 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 680081400 is about 26078.3703478572. The cubic root of 680081400 is about 879.4010214567.

The spelling of 680081400 in words is "six hundred eighty million, eighty-one thousand, four hundred".