681770141 has 16 divisors (see below), whose sum is σ = 783464640. Its totient is φ = 588021120.

The previous prime is 681770137. The next prime is 681770143. The reversal of 681770141 is 141077186.

It is not a de Polignac number, because 681770141 - 2² = 681770137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681770143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875 + ... + 36936.

It is an arithmetic number, because the mean of its divisors is an integer number (48966540).

Almost surely, 2^681770141 is an apocalyptic number.

It is an amenable number.

681770141 is a deficient number, since it is larger than the sum of its proper divisors (101694499).

681770141 is a wasteful number, since it uses less digits than its factorization.

681770141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37916.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 681770141 is about 26110.7284655178. The cubic root of 681770141 is about 880.1283133317.

The spelling of 681770141 in words is "six hundred eighty-one million, seven hundred seventy thousand, one hundred forty-one".