684454403 has 2 divisors, whose sum is σ = 684454404. Its totient is φ = 684454402.

The previous prime is 684454399. The next prime is 684454417. The reversal of 684454403 is 304454486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 684454403 - 2² = 684454399 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (684454483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342227201 + 342227202.

It is an arithmetic number, because the mean of its divisors is an integer number (342227202).

Almost surely, 2^684454403 is an apocalyptic number.

684454403 is a deficient number, since it is larger than the sum of its proper divisors (1).

684454403 is an equidigital number, since it uses as much as digits as its factorization.

684454403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 38.

The square root of 684454403 is about 26162.0794853926. The cubic root of 684454403 is about 881.2818796508.

The spelling of 684454403 in words is "six hundred eighty-four million, four hundred fifty-four thousand, four hundred three".