97821266 has 16 divisors (see below), whose sum is σ = 151355520. Its totient is φ = 47381040.

The previous prime is 97821221. The next prime is 97821313. The reversal of 97821266 is 66212879.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14921 + ... + 20451.

It is an arithmetic number, because the mean of its divisors is an integer number (9459720).

Almost surely, 2^97821266 is an apocalyptic number.

97821266 is a deficient number, since it is larger than the sum of its proper divisors (53534254).

97821266 is a wasteful number, since it uses less digits than its factorization.

97821266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809.

The product of its digits is 72576, while the sum is 41.

The square root of 97821266 is about 9890.4633865153. The cubic root of 97821266 is about 460.7631723367.

The spelling of 97821266 in words is "ninety-seven million, eight hundred twenty-one thousand, two hundred sixty-six".