681422112 has 192 divisors, whose sum is σ = 2285015040. Its totient is φ = 193529088.

The previous prime is 681422083. The next prime is 681422141. The reversal of 681422112 is 211224186.

It is an interprime number because it is at equal distance from previous prime (681422083) and next prime (681422141).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1856553 + ... + 1856919.

It is an arithmetic number, because the mean of its divisors is an integer number (11901120).

Almost surely, 2^681422112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681422112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142507520).

681422112 is an abundant number, since it is smaller than the sum of its proper divisors (1603592928).

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

681422112 is a wasteful number, since it uses less digits than its factorization.

681422112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 686 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 681422112 is about 26104.0631320107. The cubic root of 681422112 is about 879.9785256468.

Adding to 681422112 its reverse (211224186), we get a palindrome (892646298).

The spelling of 681422112 in words is "six hundred eighty-one million, four hundred twenty-two thousand, one hundred twelve".