684274028 has 6 divisors (see below), whose sum is σ = 1197479556. Its totient is φ = 342137012.

The previous prime is 684273991. The next prime is 684274039. The reversal of 684274028 is 820472486.

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, 85534250 + ... + 85534257.

It is an arithmetic number, because the mean of its divisors is an integer number (199579926).

Almost surely, 2^684274028 is an apocalyptic number.

It is an amenable number.

684274028 is a deficient number, since it is larger than the sum of its proper divisors (513205528).

684274028 is a wasteful number, since it uses less digits than its factorization.

684274028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171068511 (or 171068509 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 684274028 is about 26158.6319978702. The cubic root of 684274028 is about 881.2044577977.

The spelling of 684274028 in words is "six hundred eighty-four million, two hundred seventy-four thousand, twenty-eight".