1711664047 has 4 divisors (see below), whose sum is σ = 1712291256. Its totient is φ = 1711036840.

The previous prime is 1711664041. The next prime is 1711664081. The reversal of 1711664047 is 7404661171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7404661171 = 19 ⋅389719009.

It is a cyclic number.

It is not a de Polignac number, because 1711664047 - 2¹⁵ = 1711631279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1711663997 and 1711664015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1711664041) 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, 309493 + ... + 314974.

It is an arithmetic number, because the mean of its divisors is an integer number (428072814).

Almost surely, 2^1711664047 is an apocalyptic number.

1711664047 is a deficient number, since it is larger than the sum of its proper divisors (627209).

1711664047 is an equidigital number, since it uses as much as digits as its factorization.

1711664047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627208.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1711664047 is about 41372.2618066743. The cubic root of 1711664047 is about 1196.2065501496.

The spelling of 1711664047 in words is "one billion, seven hundred eleven million, six hundred sixty-four thousand, forty-seven".