684200712 has 64 divisors (see below), whose sum is σ = 1905624000. Its totient is φ = 203261184.

The previous prime is 684200681. The next prime is 684200719. The reversal of 684200712 is 217002486.

It is a super-2 number, since 2×684200712² = 936261228602613888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 684200712.

It is not an unprimeable number, because it can be changed into a prime (684200719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28762 + ... + 46857.

It is an arithmetic number, because the mean of its divisors is an integer number (29775375).

Almost surely, 2^684200712 is an apocalyptic number.

It is an amenable number.

684200712 is an abundant number, since it is smaller than the sum of its proper divisors (1221423288).

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

684200712 is a wasteful number, since it uses less digits than its factorization.

684200712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75670 (or 75666 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 684200712 is about 26157.2305873539. The cubic root of 684200712 is about 881.1729846885.

The spelling of 684200712 in words is "six hundred eighty-four million, two hundred thousand, seven hundred twelve".