6171740687 has 8 divisors (see below), whose sum is σ = 7054069536. Its totient is φ = 5289574752.

The previous prime is 6171740681. The next prime is 6171740699. The reversal of 6171740687 is 7860471716.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-6171740687 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 (6171740681) 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, 55673 + ... + 124269.

It is an arithmetic number, because the mean of its divisors is an integer number (881758692).

Almost surely, 2^6171740687 is an apocalyptic number.

6171740687 is a deficient number, since it is larger than the sum of its proper divisors (882328849).

6171740687 is a wasteful number, since it uses less digits than its factorization.

6171740687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81457.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 6171740687 is about 78560.4269782185. The cubic root of 6171740687 is about 1834.2951740754.

The spelling of 6171740687 in words is "six billion, one hundred seventy-one million, seven hundred forty thousand, six hundred eighty-seven".