684343253 has 8 divisors (see below), whose sum is σ = 747502560. Its totient is φ = 621341680.

The previous prime is 684343243. The next prime is 684343307. The reversal of 684343253 is 352343486.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 684343253 - 2¹⁰ = 684342229 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 (684343213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30263 + ... + 47796.

It is an arithmetic number, because the mean of its divisors is an integer number (93437820).

Almost surely, 2^684343253 is an apocalyptic number.

It is an amenable number.

684343253 is a deficient number, since it is larger than the sum of its proper divisors (63159307).

684343253 is a wasteful number, since it uses less digits than its factorization.

684343253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78867.

The product of its digits is 207360, while the sum is 38.

The square root of 684343253 is about 26159.9551413988. The cubic root of 684343253 is about 881.2341726581.

The spelling of 684343253 in words is "six hundred eighty-four million, three hundred forty-three thousand, two hundred fifty-three".