684733798 has 16 divisors (see below), whose sum is σ = 1190363904. Its totient is φ = 289323720.

The previous prime is 684733781. The next prime is 684733801. The reversal of 684733798 is 897337486.

It is a super-4 number, since 4×684733798⁴ (a number of 36 digits) contains 4444 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 343440 + ... + 345427.

It is an arithmetic number, because the mean of its divisors is an integer number (74397744).

Almost surely, 2^684733798 is an apocalyptic number.

684733798 is a deficient number, since it is larger than the sum of its proper divisors (505630106).

684733798 is a wasteful number, since it uses less digits than its factorization.

684733798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688947.

The product of its digits is 6096384, while the sum is 55.

The square root of 684733798 is about 26167.4186346304. The cubic root of 684733798 is about 881.4017767319.

The spelling of 684733798 in words is "six hundred eighty-four million, seven hundred thirty-three thousand, seven hundred ninety-eight".