6707006721 has 12 divisors (see below), whose sum is σ = 9693837972. Its totient is φ = 4468596576.

The previous prime is 6707006699. The next prime is 6707006777. The reversal of 6707006721 is 1276007076.

It can be written as a sum of positive squares in 2 ways, for example, as 3631749696 + 3075257025 = 60264^2 + 55455^2 .

It is not a de Polignac number, because 6707006721 - 2¹⁵ = 6706973953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6707006221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212886 + ... + 242351.

It is an arithmetic number, because the mean of its divisors is an integer number (807819831).

Almost surely, 2^6707006721 is an apocalyptic number.

It is an amenable number.

6707006721 is a deficient number, since it is larger than the sum of its proper divisors (2986831251).

6707006721 is a wasteful number, since it uses less digits than its factorization.

6707006721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456880 (or 456877 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 6707006721 is about 81896.3168952060. The cubic root of 6707006721 is about 1885.8605710182.

The spelling of 6707006721 in words is "six billion, seven hundred seven million, six thousand, seven hundred twenty-one".