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220769897 is a prime number
BaseRepresentation
bin11010010100010…
…10111001101001
3120101102021100212
431022022321221
5423004114042
633523510505
75320341005
oct1512127151
9511367325
10220769897
11103689767
1261b28435
1336979c9a
142146b705
15145ad482
hexd28ae69

220769897 has 2 divisors, whose sum is σ = 220769898. Its totient is φ = 220769896.

The previous prime is 220769867. The next prime is 220769993. The reversal of 220769897 is 798967022.

It is a happy number.

220769897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136515856 + 84254041 = 11684^2 + 9179^2 .

It is a cyclic number.

It is not a de Polignac number, because 220769897 - 28 = 220769641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220769807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110384948 + 110384949.

It is an arithmetic number, because the mean of its divisors is an integer number (110384949).

Almost surely, 2220769897 is an apocalyptic number.

It is an amenable number.

220769897 is a deficient number, since it is larger than the sum of its proper divisors (1).

220769897 is an equidigital number, since it uses as much as digits as its factorization.

220769897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 220769897 is about 14858.3275303784. The cubic root of 220769897 is about 604.3844541910.

The spelling of 220769897 in words is "two hundred twenty million, seven hundred sixty-nine thousand, eight hundred ninety-seven".