680406424 has 32 divisors (see below), whose sum is σ = 1346220000. Its totient is φ = 321747712.

The previous prime is 680406409. The next prime is 680406427. The reversal of 680406424 is 424604086.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 680406424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680406427) 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 7 ways as a sum of consecutive naturals, for example, 4399 + ... + 37150.

It is an arithmetic number, because the mean of its divisors is an integer number (42069375).

Almost surely, 2^680406424 is an apocalyptic number.

It is an amenable number.

680406424 is a deficient number, since it is larger than the sum of its proper divisors (665813576).

680406424 is a wasteful number, since it uses less digits than its factorization.

680406424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41667 (or 41663 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 680406424 is about 26084.6012812157. The cubic root of 680406424 is about 879.5410933734.

The spelling of 680406424 in words is "six hundred eighty million, four hundred six thousand, four hundred twenty-four".