684044411 has 4 divisors (see below), whose sum is σ = 684099000. Its totient is φ = 683989824.

The previous prime is 684044393. The next prime is 684044497. The reversal of 684044411 is 114440486.

684044411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, 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 684044411 - 2²² = 679850107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684043411) 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, 1940 + ... + 37038.

It is an arithmetic number, because the mean of its divisors is an integer number (171024750).

Almost surely, 2^684044411 is an apocalyptic number.

684044411 is a deficient number, since it is larger than the sum of its proper divisors (54589).

684044411 is a wasteful number, since it uses less digits than its factorization.

684044411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54588.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 684044411 is about 26154.2426959757. The cubic root of 684044411 is about 881.1058802530.

Adding to 684044411 its reverse (114440486), we get a palindrome (798484897).

The spelling of 684044411 in words is "six hundred eighty-four million, forty-four thousand, four hundred eleven".