6661307 has 2 divisors, whose sum is σ = 6661308. Its totient is φ = 6661306.

The previous prime is 6661301. The next prime is 6661313. The reversal of 6661307 is 7031666.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (6661301) and next prime (6661313).

It is a cyclic number.

It is not a de Polignac number, because 6661307 - 2⁶ = 6661243 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6661307.

It is not a weakly prime, because it can be changed into another prime (6661301) 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 as a sum of consecutive naturals, namely, 3330653 + 3330654.

It is an arithmetic number, because the mean of its divisors is an integer number (3330654).

Almost surely, 2^6661307 is an apocalyptic number.

6661307 is a deficient number, since it is larger than the sum of its proper divisors (1).

6661307 is an equidigital number, since it uses as much as digits as its factorization.

6661307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 6661307 is about 2580.9507937967. The cubic root of 6661307 is about 188.1567558597.

The spelling of 6661307 in words is "six million, six hundred sixty-one thousand, three hundred seven".