681492222 has 24 divisors (see below), whose sum is σ = 1497366000. Its totient is φ = 223964160.

The previous prime is 681492193. The next prime is 681492223. The reversal of 681492222 is 222294186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681492223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265347 + ... + 267902.

It is an arithmetic number, because the mean of its divisors is an integer number (62390250).

Almost surely, 2^681492222 is an apocalyptic number.

681492222 is an abundant number, since it is smaller than the sum of its proper divisors (815873778).

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

681492222 is a wasteful number, since it uses less digits than its factorization.

681492222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533328 (or 533325 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 681492222 is about 26105.4059918631. The cubic root of 681492222 is about 880.0087042872.

The spelling of 681492222 in words is "six hundred eighty-one million, four hundred ninety-two thousand, two hundred twenty-two".