97786221 has 8 divisors (see below), whose sum is σ = 140411040. Its totient is φ = 60176112.

The previous prime is 97786211. The next prime is 97786229. The reversal of 97786221 is 12268779.

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

It is not a de Polignac number, because 97786221 - 2¹¹ = 97784173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97786229) 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, 1253631 + ... + 1253708.

It is an arithmetic number, because the mean of its divisors is an integer number (17551380).

Almost surely, 2^97786221 is an apocalyptic number.

It is an amenable number.

97786221 is a deficient number, since it is larger than the sum of its proper divisors (42624819).

97786221 is a wasteful number, since it uses less digits than its factorization.

97786221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507355.

The product of its digits is 84672, while the sum is 42.

The square root of 97786221 is about 9888.6915716894. The cubic root of 97786221 is about 460.7081421279.

The spelling of 97786221 in words is "ninety-seven million, seven hundred eighty-six thousand, two hundred twenty-one".