681807282 has 16 divisors (see below), whose sum is σ = 1468508160. Its totient is φ = 209786832.

The previous prime is 681807281. The next prime is 681807283. The reversal of 681807282 is 282708186.

It is an interprime number because it is at equal distance from previous prime (681807281) and next prime (681807283).

It is a super-2 number, since 2×681807282² = 929722339576455048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (681807281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370482 + ... + 4370637.

It is an arithmetic number, because the mean of its divisors is an integer number (91781760).

Almost surely, 2^681807282 is an apocalyptic number.

681807282 is an abundant number, since it is smaller than the sum of its proper divisors (786700878).

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

681807282 is a wasteful number, since it uses less digits than its factorization.

681807282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741137.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 681807282 is about 26111.4396768926. The cubic root of 681807282 is about 880.1442953810.

The spelling of 681807282 in words is "six hundred eighty-one million, eight hundred seven thousand, two hundred eighty-two".