220147897 has 2 divisors, whose sum is σ = 220147898. Its totient is φ = 220147896.

The previous prime is 220147877. The next prime is 220147913. The reversal of 220147897 is 798741022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208831401 + 11316496 = 14451^2 + 3364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220147897 is a prime.

It is not a weakly prime, because it can be changed into another prime (220147847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110073948 + 110073949.

It is an arithmetic number, because the mean of its divisors is an integer number (110073949).

Almost surely, 2^220147897 is an apocalyptic number.

It is an amenable number.

220147897 is a deficient number, since it is larger than the sum of its proper divisors (1).

220147897 is an equidigital number, since it uses as much as digits as its factorization.

220147897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 220147897 is about 14837.3817434209. The cubic root of 220147897 is about 603.8163200740.

The spelling of 220147897 in words is "two hundred twenty million, one hundred forty-seven thousand, eight hundred ninety-seven".