684253723 has 8 divisors (see below), whose sum is σ = 726373440. Its totient is φ = 642341760.

The previous prime is 684253721. The next prime is 684253727. The reversal of 684253723 is 327352486.

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 684253723 - 2¹ = 684253721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684253721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45123 + ... + 58348.

It is an arithmetic number, because the mean of its divisors is an integer number (90796680).

Almost surely, 2^684253723 is an apocalyptic number.

684253723 is a deficient number, since it is larger than the sum of its proper divisors (42119717).

684253723 is a wasteful number, since it uses less digits than its factorization.

684253723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103877.

The product of its digits is 241920, while the sum is 40.

The square root of 684253723 is about 26158.2438821875. The cubic root of 684253723 is about 881.1957414878.

The spelling of 684253723 in words is "six hundred eighty-four million, two hundred fifty-three thousand, seven hundred twenty-three".