6629479 has 2 divisors, whose sum is σ = 6629480. Its totient is φ = 6629478.

The previous prime is 6629477. The next prime is 6629509. The reversal of 6629479 is 9749266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6629479 - 2¹ = 6629477 is a prime.

It is a super-2 number, since 2×6629479² = 87899983622882, which contains 22 as substring.

Together with 6629477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6629471) 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 as a sum of consecutive naturals, namely, 3314739 + 3314740.

It is an arithmetic number, because the mean of its divisors is an integer number (3314740).

Almost surely, 2^6629479 is an apocalyptic number.

6629479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6629479 is an equidigital number, since it uses as much as digits as its factorization.

6629479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 6629479 is about 2574.7774661124. Note that the first 3 decimals coincide. The cubic root of 6629479 is about 187.8566037206.

The spelling of 6629479 in words is "six million, six hundred twenty-nine thousand, four hundred seventy-nine".