681814712 has 16 divisors (see below), whose sum is σ = 1305603360. Its totient is φ = 333653824.

The previous prime is 681814711. The next prime is 681814717. The reversal of 681814712 is 217418186.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681814711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906293 + ... + 907044.

It is an arithmetic number, because the mean of its divisors is an integer number (81600210).

Almost surely, 2^681814712 is an apocalyptic number.

It is an amenable number.

681814712 is a deficient number, since it is larger than the sum of its proper divisors (623788648).

681814712 is a wasteful number, since it uses less digits than its factorization.

681814712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813390 (or 1813386 counting only the distinct ones).

The product of its digits is 21504, while the sum is 38.

The square root of 681814712 is about 26111.5819513104. The cubic root of 681814712 is about 880.1474924958.

The spelling of 681814712 in words is "six hundred eighty-one million, eight hundred fourteen thousand, seven hundred twelve".