684752996 has 24 divisors (see below), whose sum is σ = 1272614616. Its totient is φ = 321269760.

The previous prime is 684752983. The next prime is 684753029. The reversal of 684752996 is 699257486.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26112100 + 658640896 = 5110^2 + 25664^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7976 + ... + 37856.

It is an arithmetic number, because the mean of its divisors is an integer number (53025609).

Almost surely, 2^684752996 is an apocalyptic number.

It is an amenable number.

684752996 is a deficient number, since it is larger than the sum of its proper divisors (587861620).

684752996 is a wasteful number, since it uses less digits than its factorization.

684752996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30239 (or 30237 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 684752996 is about 26167.7854622817. The cubic root of 684752996 is about 881.4100139930.

The spelling of 684752996 in words is "six hundred eighty-four million, seven hundred fifty-two thousand, nine hundred ninety-six".