684434954 has 16 divisors (see below), whose sum is σ = 1205029248. Its totient is φ = 285401232.

The previous prime is 684434941. The next prime is 684435001. The reversal of 684434954 is 459434486.

It is a junction number, because it is equal to n+sod(n) for n = 684434899 and 684434908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660134 + ... + 661169.

It is an arithmetic number, because the mean of its divisors is an integer number (75314328).

Almost surely, 2^684434954 is an apocalyptic number.

684434954 is a deficient number, since it is larger than the sum of its proper divisors (520594294).

684434954 is a wasteful number, since it uses less digits than its factorization.

684434954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321349.

The product of its digits is 1658880, while the sum is 47.

The square root of 684434954 is about 26161.7077806477. The cubic root of 684434954 is about 881.2735322657.

The spelling of 684434954 in words is "six hundred eighty-four million, four hundred thirty-four thousand, nine hundred fifty-four".