680469 has 4 divisors (see below), whose sum is σ = 907296. Its totient is φ = 453644.

The previous prime is 680453. The next prime is 680489. The reversal of 680469 is 964086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680469 - 2⁴ = 680453 is a prime.

It is a super-2 number, since 2×680469² = 926076119922, which contains 22 as substring.

It is a D-number.

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 680469.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113409 + ... + 113414.

It is an arithmetic number, because the mean of its divisors is an integer number (226824).

2⁶⁸⁰⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

680469 is a deficient number, since it is larger than the sum of its proper divisors (226827).

680469 is a wasteful number, since it uses less digits than its factorization.

680469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226826.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 680469 is about 824.9054491274. The cubic root of 680469 is about 87.9568055923.

The spelling of 680469 in words is "six hundred eighty thousand, four hundred sixty-nine".