684494411 has 2 divisors, whose sum is σ = 684494412. Its totient is φ = 684494410.

The previous prime is 684494407. The next prime is 684494479. The reversal of 684494411 is 114494486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 684494411 - 2² = 684494407 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (684494011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342247205 + 342247206.

It is an arithmetic number, because the mean of its divisors is an integer number (342247206).

Almost surely, 2^684494411 is an apocalyptic number.

684494411 is a deficient number, since it is larger than the sum of its proper divisors (1).

684494411 is an equidigital number, since it uses as much as digits as its factorization.

684494411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 41.

The square root of 684494411 is about 26162.8440923383. The cubic root of 684494411 is about 881.2990503288.

The spelling of 684494411 in words is "six hundred eighty-four million, four hundred ninety-four thousand, four hundred eleven".