219580897 has 2 divisors, whose sum is σ = 219580898. Its totient is φ = 219580896.

The previous prime is 219580883. The next prime is 219580913. The reversal of 219580897 is 798085912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170145936 + 49434961 = 13044^2 + 7031^2 .

It is a cyclic number.

It is not a de Polignac number, because 219580897 - 2¹⁵ = 219548129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 219580897.

It is not a weakly prime, because it can be changed into another prime (219580817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109790448 + 109790449.

It is an arithmetic number, because the mean of its divisors is an integer number (109790449).

Almost surely, 2^219580897 is an apocalyptic number.

It is an amenable number.

219580897 is a deficient number, since it is larger than the sum of its proper divisors (1).

219580897 is an equidigital number, since it uses as much as digits as its factorization.

219580897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 219580897 is about 14818.2622800381. The cubic root of 219580897 is about 603.2974897732.

The spelling of 219580897 in words is "two hundred nineteen million, five hundred eighty thousand, eight hundred ninety-seven".