680954 has 4 divisors (see below), whose sum is σ = 1021434. Its totient is φ = 340476.

The previous prime is 680929. The next prime is 680959. The reversal of 680954 is 459086.

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

It can be written as a sum of positive squares in only one way, i.e., 403225 + 277729 = 635^2 + 527^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 680954.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680954.

It is not an unprimeable number, because it can be changed into a prime (680959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170237 + ... + 170240.

2⁶⁸⁰⁹⁵⁴ is an apocalyptic number.

680954 is a deficient number, since it is larger than the sum of its proper divisors (340480).

680954 is a wasteful number, since it uses less digits than its factorization.

680954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340479.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 680954 is about 825.1993698495. The cubic root of 680954 is about 87.9776975162.

The spelling of 680954 in words is "six hundred eighty thousand, nine hundred fifty-four".