680919 has 8 divisors (see below), whose sum is σ = 923520. Its totient is φ = 446136.

The previous prime is 680917. The next prime is 680929. The reversal of 680919 is 919086.

It is a happy number.

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

It is not a de Polignac number, because 680919 - 2¹ = 680917 is a prime.

It is a super-2 number, since 2×680919² = 927301369122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 680919.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680919.

It is not an unprimeable number, because it can be changed into a prime (680917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1747 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (115440).

2⁶⁸⁰⁹¹⁹ is an apocalyptic number.

680919 is a deficient number, since it is larger than the sum of its proper divisors (242601).

680919 is a wasteful number, since it uses less digits than its factorization.

680919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 680919 is about 825.1781625807. The cubic root of 680919 is about 87.9761901838.

The spelling of 680919 in words is "six hundred eighty thousand, nine hundred nineteen".