684273884 has 24 divisors (see below), whose sum is σ = 1394372448. Its totient is φ = 287726400.

The previous prime is 684273883. The next prime is 684273899. The reversal of 684273884 is 488372486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684273883) by changing a digit.

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, 229067 + ... + 232034.

It is an arithmetic number, because the mean of its divisors is an integer number (58098852).

Almost surely, 2^684273884 is an apocalyptic number.

It is an amenable number.

684273884 is an abundant number, since it is smaller than the sum of its proper divisors (710098564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684273884 is a wasteful number, since it uses less digits than its factorization.

684273884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461165 (or 461163 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 50.

The square root of 684273884 is about 26158.6292454326. The cubic root of 684273884 is about 881.2043959835.

The spelling of 684273884 in words is "six hundred eighty-four million, two hundred seventy-three thousand, eight hundred eighty-four".