680537 has 8 divisors (see below), whose sum is σ = 799680. Its totient is φ = 570960.

The previous prime is 680531. The next prime is 680539. The reversal of 680537 is 735086.

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

It is a de Polignac number, because none of the positive numbers 2^k-680537 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680531) 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, 2237 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (99960).

2⁶⁸⁰⁵³⁷ is an apocalyptic number.

It is an amenable number.

680537 is a deficient number, since it is larger than the sum of its proper divisors (119143).

680537 is a wasteful number, since it uses less digits than its factorization.

680537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 680537 is about 824.9466649426. The cubic root of 680537 is about 87.9597353675.

The spelling of 680537 in words is "six hundred eighty thousand, five hundred thirty-seven".