6675644121 has 8 divisors (see below), whose sum is σ = 8927272224. Its totient is φ = 4437222720.

The previous prime is 6675644117. The next prime is 6675644141. The reversal of 6675644121 is 1214465766.

6675644121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6675644121 - 2² = 6675644117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6675644111) 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, 3300495 + ... + 3302516.

It is an arithmetic number, because the mean of its divisors is an integer number (1115909028).

Almost surely, 2^6675644121 is an apocalyptic number.

It is an amenable number.

6675644121 is a deficient number, since it is larger than the sum of its proper divisors (2251628103).

6675644121 is a wasteful number, since it uses less digits than its factorization.

6675644121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603351.

The product of its digits is 241920, while the sum is 42.

The square root of 6675644121 is about 81704.6150532514. The cubic root of 6675644121 is about 1882.9164896305.

The spelling of 6675644121 in words is "six billion, six hundred seventy-five million, six hundred forty-four thousand, one hundred twenty-one".