6626121 has 4 divisors (see below), whose sum is σ = 8834832. Its totient is φ = 4417412.

The previous prime is 6626089. The next prime is 6626129. The reversal of 6626121 is 1216266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6626121 - 2⁵ = 6626089 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6626091 and 6626100.

It is not an unprimeable number, because it can be changed into a prime (6626129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104351 + ... + 1104356.

It is an arithmetic number, because the mean of its divisors is an integer number (2208708).

Almost surely, 2^6626121 is an apocalyptic number.

It is an amenable number.

6626121 is a deficient number, since it is larger than the sum of its proper divisors (2208711).

6626121 is a wasteful number, since it uses less digits than its factorization.

6626121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208710.

The product of its digits is 864, while the sum is 24.

The square root of 6626121 is about 2574.1252883261. The cubic root of 6626121 is about 187.8248803119.

The spelling of 6626121 in words is "six million, six hundred twenty-six thousand, one hundred twenty-one".