684288311 has 8 divisors (see below), whose sum is σ = 787293600. Its totient is φ = 582595488.

The previous prime is 684288307. The next prime is 684288347. The reversal of 684288311 is 113882486.

684288311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 684288311 - 2² = 684288307 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 (684188311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326996 + ... + 329081.

It is an arithmetic number, because the mean of its divisors is an integer number (98411700).

Almost surely, 2^684288311 is an apocalyptic number.

684288311 is a deficient number, since it is larger than the sum of its proper divisors (103005289).

684288311 is a wasteful number, since it uses less digits than its factorization.

684288311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656233.

The product of its digits is 73728, while the sum is 41.

The square root of 684288311 is about 26158.9050038414. The cubic root of 684288311 is about 881.2105889455.

The spelling of 684288311 in words is "six hundred eighty-four million, two hundred eighty-eight thousand, three hundred eleven".