680631339 has 4 divisors (see below), whose sum is σ = 907508456. Its totient is φ = 453754224.

The previous prime is 680631337. The next prime is 680631349. The reversal of 680631339 is 933136086.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 680631339 - 2¹ = 680631337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680631297 and 680631306.

It is not an unprimeable number, because it can be changed into a prime (680631337) 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 3 ways as a sum of consecutive naturals, for example, 113438554 + ... + 113438559.

It is an arithmetic number, because the mean of its divisors is an integer number (226877114).

Almost surely, 2^680631339 is an apocalyptic number.

680631339 is a deficient number, since it is larger than the sum of its proper divisors (226877117).

680631339 is a wasteful number, since it uses less digits than its factorization.

680631339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226877116.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 680631339 is about 26088.9121850644. The cubic root of 680631339 is about 879.6379963345.

The spelling of 680631339 in words is "six hundred eighty million, six hundred thirty-one thousand, three hundred thirty-nine".