680481 has 20 divisors (see below), whose sum is σ = 1053184. Its totient is φ = 437400.

The previous prime is 680453. The next prime is 680489. The reversal of 680481 is 184086.

It is not a de Polignac number, because 680481 - 2⁶ = 680417 is a prime.

It is a super-2 number, since 2×680481² = 926108782722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (680489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2376 + ... + 2646.

2⁶⁸⁰⁴⁸¹ is an apocalyptic number.

It is an amenable number.

680481 is a deficient number, since it is larger than the sum of its proper divisors (372703).

680481 is a wasteful number, since it uses less digits than its factorization.

680481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 680481 is about 824.9127226562. The cubic root of 680481 is about 87.9573226257.

The spelling of 680481 in words is "six hundred eighty thousand, four hundred eighty-one".