97991170 has 64 divisors (see below), whose sum is σ = 195022080. Its totient is φ = 35313408.

The previous prime is 97991141. The next prime is 97991171. The reversal of 97991170 is 7119979.

It is not an unprimeable number, because it can be changed into a prime (97991171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372459 + ... + 372721.

It is an arithmetic number, because the mean of its divisors is an integer number (3047220).

Almost surely, 2^97991170 is an apocalyptic number.

97991170 is a deficient number, since it is larger than the sum of its proper divisors (97030910).

97991170 is a wasteful number, since it uses less digits than its factorization.

97991170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 97991170 is about 9899.0489442168. The cubic root of 97991170 is about 461.0297817993.

The spelling of 97991170 in words is "ninety-seven million, nine hundred ninety-one thousand, one hundred seventy".