684864693 has 8 divisors (see below), whose sum is σ = 1014614400. Its totient is φ = 456576444.

The previous prime is 684864673. The next prime is 684864769. The reversal of 684864693 is 396468486.

It is not a de Polignac number, because 684864693 - 2⁸ = 684864437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684864673) 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, 12682653 + ... + 12682706.

It is an arithmetic number, because the mean of its divisors is an integer number (126826800).

Almost surely, 2^684864693 is an apocalyptic number.

It is an amenable number.

684864693 is a deficient number, since it is larger than the sum of its proper divisors (329749707).

684864693 is a wasteful number, since it uses less digits than its factorization.

684864693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25365368 (or 25365362 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 684864693 is about 26169.9196215808. The cubic root of 684864693 is about 881.4579366270.

The spelling of 684864693 in words is "six hundred eighty-four million, eight hundred sixty-four thousand, six hundred ninety-three".