681216862 has 8 divisors (see below), whose sum is σ = 1022954616. Its totient is φ = 340231992.

The previous prime is 681216859. The next prime is 681216863. The reversal of 681216862 is 268612186.

681216862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681216863) 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, 185953 + ... + 189580.

It is an arithmetic number, because the mean of its divisors is an integer number (127869327).

Almost surely, 2^681216862 is an apocalyptic number.

681216862 is a deficient number, since it is larger than the sum of its proper divisors (341737754).

681216862 is a wasteful number, since it uses less digits than its factorization.

681216862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376442.

The product of its digits is 55296, while the sum is 40.

The square root of 681216862 is about 26100.1314556077. The cubic root of 681216862 is about 879.8901644941.

The spelling of 681216862 in words is "six hundred eighty-one million, two hundred sixteen thousand, eight hundred sixty-two".