680239438 has 8 divisors (see below), whose sum is σ = 1037653560. Its totient is φ = 334354920.

The previous prime is 680239397. The next prime is 680239481. The reversal of 680239438 is 834932086.

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

It is a junction number, because it is equal to n+sod(n) for n = 680239394 and 680239403.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2882253 + ... + 2882488.

It is an arithmetic number, because the mean of its divisors is an integer number (129706695).

Almost surely, 2^680239438 is an apocalyptic number.

680239438 is a deficient number, since it is larger than the sum of its proper divisors (357414122).

680239438 is a wasteful number, since it uses less digits than its factorization.

680239438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764802.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 680239438 is about 26081.4002308158. The cubic root of 680239438 is about 879.4691348789.

The spelling of 680239438 in words is "six hundred eighty million, two hundred thirty-nine thousand, four hundred thirty-eight".