197220007 has 2 divisors, whose sum is σ = 197220008. Its totient is φ = 197220006.

The previous prime is 197219993. The next prime is 197220013. The reversal of 197220007 is 700022791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197220007 - 2²³ = 188831399 is a prime.

It is a super-2 number, since 2×197220007² = 77791462322160098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197220017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98610003 + 98610004.

It is an arithmetic number, because the mean of its divisors is an integer number (98610004).

Almost surely, 2^197220007 is an apocalyptic number.

197220007 is a deficient number, since it is larger than the sum of its proper divisors (1).

197220007 is an equidigital number, since it uses as much as digits as its factorization.

197220007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 197220007 is about 14043.5040855194. The cubic root of 197220007 is about 582.0813124701.

Adding to 197220007 its reverse (700022791), we get a palindrome (897242798).

The spelling of 197220007 in words is "one hundred ninety-seven million, two hundred twenty thousand, seven".