680121582 has 32 divisors (see below), whose sum is σ = 1575866112. Its totient is φ = 191657664.

The previous prime is 680121581. The next prime is 680121619. The reversal of 680121582 is 285121086.

680121582 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680121581) 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, 107848 + ... + 113979.

It is an arithmetic number, because the mean of its divisors is an integer number (49245816).

Almost surely, 2^680121582 is an apocalyptic number.

680121582 is an abundant number, since it is smaller than the sum of its proper divisors (895744530).

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

680121582 is a wasteful number, since it uses less digits than its factorization.

680121582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221912.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 680121582 is about 26079.1407450476. The cubic root of 680121582 is about 879.4183406560.

The spelling of 680121582 in words is "six hundred eighty million, one hundred twenty-one thousand, five hundred eighty-two".