97220843 has 4 divisors (see below), whose sum is σ = 97590768. Its totient is φ = 96850920.

The previous prime is 97220831. The next prime is 97220873. The reversal of 97220843 is 34802279.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97220843 - 2¹⁰ = 97219819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97220813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184568 + ... + 185093.

It is an arithmetic number, because the mean of its divisors is an integer number (24397692).

Almost surely, 2^97220843 is an apocalyptic number.

97220843 is a deficient number, since it is larger than the sum of its proper divisors (369925).

97220843 is a wasteful number, since it uses less digits than its factorization.

97220843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369924.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 97220843 is about 9860.0630322529. The cubic root of 97220843 is about 459.8185216706.

The spelling of 97220843 in words is "ninety-seven million, two hundred twenty thousand, eight hundred forty-three".