97081878 has 16 divisors (see below), whose sum is σ = 194370480. Its totient is φ = 32326176.

The previous prime is 97081841. The next prime is 97081889. The reversal of 97081878 is 87818079.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2133 + ... + 14096.

It is an arithmetic number, because the mean of its divisors is an integer number (12148155).

Almost surely, 2^97081878 is an apocalyptic number.

97081878 is an abundant number, since it is smaller than the sum of its proper divisors (97288602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97081878 is a wasteful number, since it uses less digits than its factorization.

97081878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17231.

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 97081878 is about 9853.0136506553. The cubic root of 97081878 is about 459.5993329036.

The spelling of 97081878 in words is "ninety-seven million, eighty-one thousand, eight hundred seventy-eight".