680558019 has 4 divisors (see below), whose sum is σ = 907410696. Its totient is φ = 453705344.

The previous prime is 680557967. The next prime is 680558023. The reversal of 680558019 is 910855086.

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

It is a cyclic number.

It is not a de Polignac number, because 680558019 - 2¹¹ = 680555971 is a prime.

It is a super-2 number, since 2×680558019² = 926318434450408722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (680558519) 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, 113426334 + ... + 113426339.

It is an arithmetic number, because the mean of its divisors is an integer number (226852674).

Almost surely, 2^680558019 is an apocalyptic number.

680558019 is a deficient number, since it is larger than the sum of its proper divisors (226852677).

680558019 is a wasteful number, since it uses less digits than its factorization.

680558019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226852676.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 680558019 is about 26087.5069525626. The cubic root of 680558019 is about 879.6064093014.

The spelling of 680558019 in words is "six hundred eighty million, five hundred fifty-eight thousand, nineteen".