97802321 has 4 divisors (see below), whose sum is σ = 98699700. Its totient is φ = 96904944.

The previous prime is 97802293. The next prime is 97802323. The reversal of 97802321 is 12320879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12320879 = 227 ⋅54277.

It can be written as a sum of positive squares in 2 ways, for example, as 69072721 + 28729600 = 8311^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 97802321 - 2²⁶ = 30693457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97802323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448526 + ... + 448743.

It is an arithmetic number, because the mean of its divisors is an integer number (24674925).

Almost surely, 2^97802321 is an apocalyptic number.

It is an amenable number.

97802321 is a deficient number, since it is larger than the sum of its proper divisors (897379).

97802321 is a wasteful number, since it uses less digits than its factorization.

97802321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897378.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 97802321 is about 9889.5055993715. The cubic root of 97802321 is about 460.7334251517.

The spelling of 97802321 in words is "ninety-seven million, eight hundred two thousand, three hundred twenty-one".