6947727481 has 8 divisors (see below), whose sum is σ = 7034231304. Its totient is φ = 6861571200.

The previous prime is 6947727421. The next prime is 6947727491. The reversal of 6947727481 is 1847277496.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5167309456 + 1780418025 = 71884^2 + 42195^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6947727481 - 2²⁷ = 6813509753 is a prime.

It is a super-2 number, since 2×6947727481² = 96541834300485210722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6947727401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46540 + ... + 126733.

It is an arithmetic number, because the mean of its divisors is an integer number (879278913).

Almost surely, 2^6947727481 is an apocalyptic number.

It is an amenable number.

6947727481 is a deficient number, since it is larger than the sum of its proper divisors (86503823).

6947727481 is a wasteful number, since it uses less digits than its factorization.

6947727481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173771.

The product of its digits is 4741632, while the sum is 55.

The square root of 6947727481 is about 83353.0292250978. The cubic root of 6947727481 is about 1908.1576746526.

The spelling of 6947727481 in words is "six billion, nine hundred forty-seven million, seven hundred twenty-seven thousand, four hundred eighty-one".