6626971 has 4 divisors (see below), whose sum is σ = 7136752. Its totient is φ = 6117192.

The previous prime is 6626947. The next prime is 6626981. The reversal of 6626971 is 1796266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1796266 = 2 ⋅898133.

It is a cyclic number.

It is not a de Polignac number, because 6626971 - 2¹¹ = 6624923 is a prime.

It is a Duffinian number.

6626971 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6626971.

It is not an unprimeable number, because it can be changed into a prime (6626941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254871 + ... + 254896.

It is an arithmetic number, because the mean of its divisors is an integer number (1784188).

Almost surely, 2^6626971 is an apocalyptic number.

6626971 is a deficient number, since it is larger than the sum of its proper divisors (509781).

6626971 is a wasteful number, since it uses less digits than its factorization.

6626971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509780.

The product of its digits is 27216, while the sum is 37.

The square root of 6626971 is about 2574.2903876603. The cubic root of 6626971 is about 187.8329113717.

The spelling of 6626971 in words is "six million, six hundred twenty-six thousand, nine hundred seventy-one".