6706720121 has 8 divisors (see below), whose sum is σ = 7002694080. Its totient is φ = 6411110992.

The previous prime is 6706720109. The next prime is 6706720123. The reversal of 6706720121 is 1210276076.

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 6706720121 - 2¹⁴ = 6706703737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6706720123) 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, 53291 + ... + 127488.

It is an arithmetic number, because the mean of its divisors is an integer number (875336760).

Almost surely, 2^6706720121 is an apocalyptic number.

It is an amenable number.

6706720121 is a deficient number, since it is larger than the sum of its proper divisors (295973959).

6706720121 is a wasteful number, since it uses less digits than its factorization.

6706720121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182415.

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

The square root of 6706720121 is about 81894.5671030747. The cubic root of 6706720121 is about 1885.8337087948.

Adding to 6706720121 its reverse (1210276076), we get a palindrome (7916996197).

The spelling of 6706720121 in words is "six billion, seven hundred six million, seven hundred twenty thousand, one hundred twenty-one".