681926412 has 12 divisors (see below), whose sum is σ = 1591161656. Its totient is φ = 227308800.

The previous prime is 681926339. The next prime is 681926417. The reversal of 681926412 is 214629186.

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

It is a super-3 number, since 3×681926412³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (681926417) 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, 28413589 + ... + 28413612.

Almost surely, 2^681926412 is an apocalyptic number.

It is an amenable number.

681926412 is an abundant number, since it is smaller than the sum of its proper divisors (909235244).

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

681926412 is a wasteful number, since it uses less digits than its factorization.

681926412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56827208 (or 56827206 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 681926412 is about 26113.7207613163. The cubic root of 681926412 is about 880.1955539925.

The spelling of 681926412 in words is "six hundred eighty-one million, nine hundred twenty-six thousand, four hundred twelve".