684692950 has 12 divisors (see below), whose sum is σ = 1273528980. Its totient is φ = 273877160.

The previous prime is 684692947. The next prime is 684692951. The reversal of 684692950 is 59296486.

It is a junction number, because it is equal to n+sod(n) for n = 684692894 and 684692903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684692951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6846880 + ... + 6846979.

It is an arithmetic number, because the mean of its divisors is an integer number (106127415).

Almost surely, 2^684692950 is an apocalyptic number.

684692950 is a deficient number, since it is larger than the sum of its proper divisors (588836030).

684692950 is a wasteful number, since it uses less digits than its factorization.

684692950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13693871 (or 13693866 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 684692950 is about 26166.6381103878. The cubic root of 684692950 is about 881.3842496210.

The spelling of 684692950 in words is "six hundred eighty-four million, six hundred ninety-two thousand, nine hundred fifty".