680429 has 4 divisors (see below), whose sum is σ = 682080. Its totient is φ = 678780.

The previous prime is 680417. The next prime is 680431. The reversal of 680429 is 924086.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 680429 - 2¹⁶ = 614893 is a prime.

It is a Duffinian number.

It is a congruent number.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (170520).

2⁶⁸⁰⁴²⁹ is an apocalyptic number.

It is an amenable number.

680429 is a deficient number, since it is larger than the sum of its proper divisors (1651).

680429 is an equidigital number, since it uses as much as digits as its factorization.

680429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 680429 is about 824.8812035681. The cubic root of 680429 is about 87.9550821040.

The spelling of 680429 in words is "six hundred eighty thousand, four hundred twenty-nine".