97206221 has 8 divisors (see below), whose sum is σ = 117627840. Its totient is φ = 78418368.

The previous prime is 97206209. The next prime is 97206227. The reversal of 97206221 is 12260279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97206221 - 2⁶ = 97206157 is a prime.

It is a super-2 number, since 2×97206221² = 18898098802201682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97206227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408311 + ... + 408548.

It is an arithmetic number, because the mean of its divisors is an integer number (14703480).

Almost surely, 2^97206221 is an apocalyptic number.

It is an amenable number.

97206221 is a deficient number, since it is larger than the sum of its proper divisors (20421619).

97206221 is a wasteful number, since it uses less digits than its factorization.

97206221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816883.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 97206221 is about 9859.3215283811. The cubic root of 97206221 is about 459.7954683030.

The spelling of 97206221 in words is "ninety-seven million, two hundred six thousand, two hundred twenty-one".