680321438 has 8 divisors (see below), whose sum is σ = 1022187600. Its totient is φ = 339592240.

The previous prime is 680321437. The next prime is 680321441. The reversal of 680321438 is 834123086.

It is a happy number.

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 = 680321398 and 680321407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680321437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282743 + ... + 285138.

It is an arithmetic number, because the mean of its divisors is an integer number (127773450).

Almost surely, 2^680321438 is an apocalyptic number.

680321438 is a deficient number, since it is larger than the sum of its proper divisors (341866162).

680321438 is a wasteful number, since it uses less digits than its factorization.

680321438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568482.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 680321438 is about 26082.9721849332. The cubic root of 680321438 is about 879.5044722260.

The spelling of 680321438 in words is "six hundred eighty million, three hundred twenty-one thousand, four hundred thirty-eight".