6620833 has 2 divisors, whose sum is σ = 6620834. Its totient is φ = 6620832.

The previous prime is 6620819. The next prime is 6620851. The reversal of 6620833 is 3380266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4524129 + 2096704 = 2127^2 + 1448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6620833 is a prime.

It is a super-2 number, since 2×6620833² = 87670859227778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6620863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310416 + 3310417.

It is an arithmetic number, because the mean of its divisors is an integer number (3310417).

Almost surely, 2^6620833 is an apocalyptic number.

It is an amenable number.

6620833 is a deficient number, since it is larger than the sum of its proper divisors (1).

6620833 is an equidigital number, since it uses as much as digits as its factorization.

6620833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6620833 is about 2573.0979382837. The cubic root of 6620833 is about 187.7749022379.

The spelling of 6620833 in words is "six million, six hundred twenty thousand, eight hundred thirty-three".