97865213 has 4 divisors (see below), whose sum is σ = 97932000. Its totient is φ = 97798428.

The previous prime is 97865203. The next prime is 97865221. The reversal of 97865213 is 31256879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97865213 - 2¹⁶ = 97799677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97865203) 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, 31145 + ... + 34142.

It is an arithmetic number, because the mean of its divisors is an integer number (24483000).

Almost surely, 2^97865213 is an apocalyptic number.

It is an amenable number.

97865213 is a deficient number, since it is larger than the sum of its proper divisors (66787).

97865213 is a wasteful number, since it uses less digits than its factorization.

97865213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66786.

The product of its digits is 90720, while the sum is 41.

The square root of 97865213 is about 9892.6848226354. The cubic root of 97865213 is about 460.8321625415.

The spelling of 97865213 in words is "ninety-seven million, eight hundred sixty-five thousand, two hundred thirteen".