97766971 has 4 divisors (see below), whose sum is σ = 98332272. Its totient is φ = 97201672.

The previous prime is 97766959. The next prime is 97767011. The reversal of 97766971 is 17966779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17966779 = 269 ⋅66791.

It is a cyclic number.

It is not a de Polignac number, because 97766971 - 2⁵ = 97766939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97766941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282391 + ... + 282736.

It is an arithmetic number, because the mean of its divisors is an integer number (24583068).

Almost surely, 2^97766971 is an apocalyptic number.

97766971 is a deficient number, since it is larger than the sum of its proper divisors (565301).

97766971 is a wasteful number, since it uses less digits than its factorization.

97766971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565300.

The product of its digits is 1000188, while the sum is 52.

The square root of 97766971 is about 9887.7181897544. The cubic root of 97766971 is about 460.6779087826.

The spelling of 97766971 in words is "ninety-seven million, seven hundred sixty-six thousand, nine hundred seventy-one".