6721310471 has 4 divisors (see below), whose sum is σ = 6726771744. Its totient is φ = 6715849200.

The previous prime is 6721310429. The next prime is 6721310473. The reversal of 6721310471 is 1740131276.

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

It is a cyclic number.

It is not a de Polignac number, because 6721310471 - 2¹⁰ = 6721309447 is a prime.

It is a super-3 number, since 3×6721310471³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721310473) 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, 2728790 + ... + 2731251.

It is an arithmetic number, because the mean of its divisors is an integer number (1681692936).

Almost surely, 2^6721310471 is an apocalyptic number.

6721310471 is a deficient number, since it is larger than the sum of its proper divisors (5461273).

6721310471 is a wasteful number, since it uses less digits than its factorization.

6721310471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461272.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 6721310471 is about 81983.5987926854. The cubic root of 6721310471 is about 1887.2002508432.

The spelling of 6721310471 in words is "six billion, seven hundred twenty-one million, three hundred ten thousand, four hundred seventy-one".