220872077 has 2 divisors, whose sum is σ = 220872078. Its totient is φ = 220872076.

The previous prime is 220872073. The next prime is 220872083. The reversal of 220872077 is 770278022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160250281 + 60621796 = 12659^2 + 7786^2 .

It is a cyclic number.

It is not a de Polignac number, because 220872077 - 2² = 220872073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220872073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110436038 + 110436039.

It is an arithmetic number, because the mean of its divisors is an integer number (110436039).

Almost surely, 2^220872077 is an apocalyptic number.

It is an amenable number.

220872077 is a deficient number, since it is larger than the sum of its proper divisors (1).

220872077 is an equidigital number, since it uses as much as digits as its factorization.

220872077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 220872077 is about 14861.7656084329. The cubic root of 220872077 is about 604.4776832034.

The spelling of 220872077 in words is "two hundred twenty million, eight hundred seventy-two thousand, seventy-seven".