97220689 has 2 divisors, whose sum is σ = 97220690. Its totient is φ = 97220688.

The previous prime is 97220677. The next prime is 97220699. The reversal of 97220689 is 98602279.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97219600 + 1089 = 9860^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 97220689 - 2⁵ = 97220657 is a prime.

It is not a weakly prime, because it can be changed into another prime (97220699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48610344 + 48610345.

It is an arithmetic number, because the mean of its divisors is an integer number (48610345).

Almost surely, 2^97220689 is an apocalyptic number.

It is an amenable number.

97220689 is a deficient number, since it is larger than the sum of its proper divisors (1).

97220689 is an equidigital number, since it uses as much as digits as its factorization.

97220689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 97220689 is about 9860.0552229691. The cubic root of 97220689 is about 459.8182788829.

The spelling of 97220689 in words is "ninety-seven million, two hundred twenty thousand, six hundred eighty-nine".