681068171 has 8 divisors (see below), whose sum is σ = 803472384. Its totient is φ = 564941160.

The previous prime is 681068131. The next prime is 681068177. The reversal of 681068171 is 171860186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681068171 - 2¹⁰ = 681067147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681068177) 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, 1569065 + ... + 1569498.

It is an arithmetic number, because the mean of its divisors is an integer number (100434048).

Almost surely, 2^681068171 is an apocalyptic number.

681068171 is a deficient number, since it is larger than the sum of its proper divisors (122404213).

681068171 is a wasteful number, since it uses less digits than its factorization.

681068171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138601.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 681068171 is about 26097.2828279114. The cubic root of 681068171 is about 879.8261411873.

It can be divided in two parts, 6810681 and 71, that multiplied together give a triangular number (483558351 = T₃₁₀₉₈).

The spelling of 681068171 in words is "six hundred eighty-one million, sixty-eight thousand, one hundred seventy-one".