680019938 has 8 divisors (see below), whose sum is σ = 1098493788. Its totient is φ = 313855344.

The previous prime is 680019889. The next prime is 680019979. The reversal of 680019938 is 839910086.

It can be written as a sum of positive squares in 2 ways, for example, as 678758809 + 1261129 = 26053^2 + 1123^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13077281 + ... + 13077332.

Almost surely, 2^680019938 is an apocalyptic number.

680019938 is a deficient number, since it is larger than the sum of its proper divisors (418473850).

680019938 is a wasteful number, since it uses less digits than its factorization.

680019938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26154628.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 680019938 is about 26077.1919117071. The cubic root of 680019938 is about 879.3745288565.

The spelling of 680019938 in words is "six hundred eighty million, nineteen thousand, nine hundred thirty-eight".