681010212 has 12 divisors (see below), whose sum is σ = 1589023856. Its totient is φ = 227003400.

The previous prime is 681010193. The next prime is 681010223. The reversal of 681010212 is 212010186.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28375414 + ... + 28375437.

Almost surely, 2^681010212 is an apocalyptic number.

It is an amenable number.

681010212 is an abundant number, since it is smaller than the sum of its proper divisors (908013644).

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

681010212 is a wasteful number, since it uses less digits than its factorization.

681010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56750858 (or 56750856 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 681010212 is about 26096.1723630114. The cubic root of 681010212 is about 879.8011827019.

Adding to 681010212 its reverse (212010186), we get a palindrome (893020398).

The spelling of 681010212 in words is "six hundred eighty-one million, ten thousand, two hundred twelve".