680743049 has 8 divisors (see below), whose sum is σ = 796967808. Its totient is φ = 569262240.

The previous prime is 680743027. The next prime is 680743061. The reversal of 680743049 is 940347086.

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

It is a cyclic number.

It is not a de Polignac number, because 680743049 - 2²⁸ = 412307593 is a prime.

It is a super-2 number, since 2×680743049² = 926822197523632802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 680742997 and 680743015.

It is not an unprimeable number, because it can be changed into a prime (680743069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185677 + ... + 1186250.

It is an arithmetic number, because the mean of its divisors is an integer number (99620976).

Almost surely, 2^680743049 is an apocalyptic number.

It is an amenable number.

680743049 is a deficient number, since it is larger than the sum of its proper divisors (116224759).

680743049 is a wasteful number, since it uses less digits than its factorization.

680743049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371975.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 680743049 is about 26091.0530450574. The cubic root of 680743049 is about 879.6861178258.

The spelling of 680743049 in words is "six hundred eighty million, seven hundred forty-three thousand, forty-nine".