6624971 has 2 divisors, whose sum is σ = 6624972. Its totient is φ = 6624970.

The previous prime is 6624953. The next prime is 6624973. The reversal of 6624971 is 1794266.

6624971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6624971 is a prime.

Together with 6624973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6624973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312485 + 3312486.

It is an arithmetic number, because the mean of its divisors is an integer number (3312486).

Almost surely, 2^6624971 is an apocalyptic number.

6624971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6624971 is an equidigital number, since it uses as much as digits as its factorization.

6624971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 6624971 is about 2573.9019017826. The cubic root of 6624971 is about 187.8140136672.

The spelling of 6624971 in words is "six million, six hundred twenty-four thousand, nine hundred seventy-one".