684284933 has 2 divisors, whose sum is σ = 684284934. Its totient is φ = 684284932.

The previous prime is 684284927. The next prime is 684284987. The reversal of 684284933 is 339482486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 580713604 + 103571329 = 24098^2 + 10177^2 .

It is a cyclic number.

It is not a de Polignac number, because 684284933 - 2¹² = 684280837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684284633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342142466 + 342142467.

It is an arithmetic number, because the mean of its divisors is an integer number (342142467).

Almost surely, 2^684284933 is an apocalyptic number.

It is an amenable number.

684284933 is a deficient number, since it is larger than the sum of its proper divisors (1).

684284933 is an equidigital number, since it uses as much as digits as its factorization.

684284933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 47.

The square root of 684284933 is about 26158.8404368389. The cubic root of 684284933 is about 881.2091389065.

The spelling of 684284933 in words is "six hundred eighty-four million, two hundred eighty-four thousand, nine hundred thirty-three".