6316174721 has 4 divisors (see below), whose sum is σ = 6343756500. Its totient is φ = 6288592944.

The previous prime is 6316174699. The next prime is 6316174727. The reversal of 6316174721 is 1274716136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5941326400 + 374848321 = 77080^2 + 19361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6316174721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6316174727) 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, 13790546 + ... + 13791003.

It is an arithmetic number, because the mean of its divisors is an integer number (1585939125).

Almost surely, 2^6316174721 is an apocalyptic number.

It is an amenable number.

6316174721 is a deficient number, since it is larger than the sum of its proper divisors (27581779).

6316174721 is a wasteful number, since it uses less digits than its factorization.

6316174721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27581778.

The product of its digits is 42336, while the sum is 38.

The square root of 6316174721 is about 79474.3651814848. The cubic root of 6316174721 is about 1848.4939992016.

The spelling of 6316174721 in words is "six billion, three hundred sixteen million, one hundred seventy-four thousand, seven hundred twenty-one".