681941195 has 24 divisors (see below), whose sum is σ = 902898576. Its totient is φ = 494053248.

The previous prime is 681941173. The next prime is 681941219. The reversal of 681941195 is 591149186.

It is not a de Polignac number, because 681941195 - 2¹⁴ = 681924811 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37172 + ... + 52398.

It is an arithmetic number, because the mean of its divisors is an integer number (37620774).

Almost surely, 2^681941195 is an apocalyptic number.

681941195 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

681941195 is a deficient number, since it is larger than the sum of its proper divisors (220957381).

681941195 is a wasteful number, since it uses less digits than its factorization.

681941195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15311 (or 15298 counting only the distinct ones).

The product of its digits is 77760, while the sum is 44.

The square root of 681941195 is about 26114.0038102165. The cubic root of 681941195 is about 880.2019143253.

The spelling of 681941195 in words is "six hundred eighty-one million, nine hundred forty-one thousand, one hundred ninety-five".