681471102 has 16 divisors (see below), whose sum is σ = 1467784080. Its totient is φ = 209683392.

The previous prime is 681471101. The next prime is 681471103. The reversal of 681471102 is 201174186.

It is an interprime number because it is at equal distance from previous prime (681471101) and next prime (681471103).

It is a super-2 number, since 2×681471102² = 928805725722188808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 681471102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681471101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4368327 + ... + 4368482.

It is an arithmetic number, because the mean of its divisors is an integer number (91736505).

Almost surely, 2^681471102 is an apocalyptic number.

681471102 is an abundant number, since it is smaller than the sum of its proper divisors (786312978).

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

681471102 is a wasteful number, since it uses less digits than its factorization.

681471102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8736827.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 681471102 is about 26105.0014748132. The cubic root of 681471102 is about 879.9996134640. Note that the first 3 decimals are identical.

The spelling of 681471102 in words is "six hundred eighty-one million, four hundred seventy-one thousand, one hundred two".