66122803 has 2 divisors, whose sum is σ = 66122804. Its totient is φ = 66122802.

The previous prime is 66122729. The next prime is 66122821. The reversal of 66122803 is 30822166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66122803 - 2¹³ = 66114611 is a prime.

It is not a weakly prime, because it can be changed into another prime (66123803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33061401 + 33061402.

It is an arithmetic number, because the mean of its divisors is an integer number (33061402).

Almost surely, 2^66122803 is an apocalyptic number.

66122803 is a deficient number, since it is larger than the sum of its proper divisors (1).

66122803 is an equidigital number, since it uses as much as digits as its factorization.

66122803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66122803 is about 8131.5928943842. The cubic root of 66122803 is about 404.3744914142.

Adding to 66122803 its reverse (30822166), we get a palindrome (96944969).

The spelling of 66122803 in words is "sixty-six million, one hundred twenty-two thousand, eight hundred three".