6701722209 has 72 divisors (see below), whose sum is σ = 12200446440. Its totient is φ = 3534463296.

The previous prime is 6701722207. The next prime is 6701722219. The reversal of 6701722209 is 9022271076.

It can be written as a sum of positive squares in 4 ways, for example, as 1603762209 + 5097960000 = 40047^2 + 71400^2 .

It is not a de Polignac number, because 6701722209 - 2¹ = 6701722207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6701722207) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 965419 + ... + 972335.

It is an arithmetic number, because the mean of its divisors is an integer number (169450645).

Almost surely, 2^6701722209 is an apocalyptic number.

It is an amenable number.

6701722209 is a deficient number, since it is larger than the sum of its proper divisors (5498724231).

6701722209 is a wasteful number, since it uses less digits than its factorization.

6701722209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6976 (or 6940 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 6701722209 is about 81864.0471086056. The cubic root of 6701722209 is about 1885.3651452755.

The spelling of 6701722209 in words is "six billion, seven hundred one million, seven hundred twenty-two thousand, two hundred nine".