6662417 has 2 divisors, whose sum is σ = 6662418. Its totient is φ = 6662416.

The previous prime is 6662401. The next prime is 6662437. The reversal of 6662417 is 7142666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3690241 + 2972176 = 1921^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 6662417 - 2⁴ = 6662401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6662437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331208 + 3331209.

It is an arithmetic number, because the mean of its divisors is an integer number (3331209).

Almost surely, 2^6662417 is an apocalyptic number.

It is an amenable number.

6662417 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662417 is an equidigital number, since it uses as much as digits as its factorization.

6662417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 6662417 is about 2581.1658218720. The cubic root of 6662417 is about 188.1672063814.

Subtracting 6662417 from its reverse (7142666), we obtain a square (480249 = 693²).

The spelling of 6662417 in words is "six million, six hundred sixty-two thousand, four hundred seventeen".