681346100 has 36 divisors (see below), whose sum is σ = 1482717600. Its totient is φ = 271764960.

The previous prime is 681346093. The next prime is 681346103. The reversal of 681346100 is 1643186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681346103) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26411 + ... + 45389.

It is an arithmetic number, because the mean of its divisors is an integer number (41186600).

Almost surely, 2^681346100 is an apocalyptic number.

It is an amenable number.

681346100 is an abundant number, since it is smaller than the sum of its proper divisors (801371500).

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

681346100 is a wasteful number, since it uses less digits than its factorization.

681346100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352 (or 19345 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 681346100 is about 26102.6071494784. The cubic root of 681346100 is about 879.9458041692.

Adding to 681346100 its reverse (1643186), we get a palindrome (682989286).

The spelling of 681346100 in words is "six hundred eighty-one million, three hundred forty-six thousand, one hundred".