681714173 has 4 divisors (see below), whose sum is σ = 779101920. Its totient is φ = 584326428.

The previous prime is 681714151. The next prime is 681714191. The reversal of 681714173 is 371417186.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 681714173 - 2¹⁸ = 681452029 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 (681714193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48693863 + ... + 48693876.

It is an arithmetic number, because the mean of its divisors is an integer number (194775480).

Almost surely, 2^681714173 is an apocalyptic number.

It is an amenable number.

681714173 is a deficient number, since it is larger than the sum of its proper divisors (97387747).

681714173 is an equidigital number, since it uses as much as digits as its factorization.

681714173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97387746.

The product of its digits is 28224, while the sum is 38.

The square root of 681714173 is about 26109.6567001560. The cubic root of 681714173 is about 880.1042287874.

The spelling of 681714173 in words is "six hundred eighty-one million, seven hundred fourteen thousand, one hundred seventy-three".