97992605 has 4 divisors (see below), whose sum is σ = 117591132. Its totient is φ = 78394080.

The previous prime is 97992553. The next prime is 97992619. The reversal of 97992605 is 50629979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50629979 = 2099 ⋅24121.

It can be written as a sum of positive squares in 2 ways, for example, as 36699364 + 61293241 = 6058^2 + 7829^2 .

It is not a de Polignac number, because 97992605 - 2⁶ = 97992541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97992605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9799256 + ... + 9799265.

It is an arithmetic number, because the mean of its divisors is an integer number (29397783).

Almost surely, 2^97992605 is an apocalyptic number.

It is an amenable number.

97992605 is a deficient number, since it is larger than the sum of its proper divisors (19598527).

97992605 is a wasteful number, since it uses less digits than its factorization.

97992605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19598526.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 97992605 is about 9899.1214256620. The cubic root of 97992605 is about 461.0320322555.

The spelling of 97992605 in words is "ninety-seven million, nine hundred ninety-two thousand, six hundred five".