684266854 has 4 divisors (see below), whose sum is σ = 1026400284. Its totient is φ = 342133426.

The previous prime is 684266833. The next prime is 684266879. The reversal of 684266854 is 458662486.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×684266854² = 936442254966114632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 684266798 and 684266807.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 171066712 + ... + 171066715.

It is an arithmetic number, because the mean of its divisors is an integer number (256600071).

Almost surely, 2^684266854 is an apocalyptic number.

684266854 is a deficient number, since it is larger than the sum of its proper divisors (342133430).

684266854 is a wasteful number, since it uses less digits than its factorization.

684266854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342133429.

The product of its digits is 2211840, while the sum is 49.

The square root of 684266854 is about 26158.4948726030. The cubic root of 684266854 is about 881.2013782406.

The spelling of 684266854 in words is "six hundred eighty-four million, two hundred sixty-six thousand, eight hundred fifty-four".