681051108 has 12 divisors (see below), whose sum is σ = 1589119280. Its totient is φ = 227017032.

The previous prime is 681051083. The next prime is 681051131. The reversal of 681051108 is 801150186.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×681051108² = 927661223416055328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28377118 + ... + 28377141.

Almost surely, 2^681051108 is an apocalyptic number.

It is an amenable number.

681051108 is an abundant number, since it is smaller than the sum of its proper divisors (908068172).

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

681051108 is a wasteful number, since it uses less digits than its factorization.

681051108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56754266 (or 56754264 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 681051108 is about 26096.9559144357. The cubic root of 681051108 is about 879.8187936121.

The spelling of 681051108 in words is "six hundred eighty-one million, fifty-one thousand, one hundred eight".