220766851 has 2 divisors, whose sum is σ = 220766852. Its totient is φ = 220766850.

The previous prime is 220766831. The next prime is 220766873. The reversal of 220766851 is 158667022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220766851 - 2⁷ = 220766723 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 220766851.

It is not a weakly prime, because it can be changed into another prime (220766831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110383425 + 110383426.

It is an arithmetic number, because the mean of its divisors is an integer number (110383426).

Almost surely, 2^220766851 is an apocalyptic number.

220766851 is a deficient number, since it is larger than the sum of its proper divisors (1).

220766851 is an equidigital number, since it uses as much as digits as its factorization.

220766851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 220766851 is about 14858.2250285827. The cubic root of 220766851 is about 604.3816745797.

The spelling of 220766851 in words is "two hundred twenty million, seven hundred sixty-six thousand, eight hundred fifty-one".