6723272081 has 8 divisors (see below), whose sum is σ = 7122303720. Its totient is φ = 6324634368.

The previous prime is 6723272069. The next prime is 6723272089. The reversal of 6723272081 is 1802723276.

It can be written as a sum of positive squares in 4 ways, for example, as 5323015681 + 1400256400 = 72959^2 + 37420^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6723272081 is a prime.

It is a super-2 number, since 2×6723272081² = 90404774950308141122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6723272089) 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, 62966 + ... + 131951.

It is an arithmetic number, because the mean of its divisors is an integer number (890287965).

Almost surely, 2^6723272081 is an apocalyptic number.

It is an amenable number.

6723272081 is a deficient number, since it is larger than the sum of its proper divisors (399031639).

6723272081 is a wasteful number, since it uses less digits than its factorization.

6723272081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196963.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 6723272081 is about 81995.5613493804. The cubic root of 6723272081 is about 1887.3838256991.

The spelling of 6723272081 in words is "six billion, seven hundred twenty-three million, two hundred seventy-two thousand, eighty-one".