99997305 has 8 divisors (see below), whose sum is σ = 159995712.
Its totient is φ = 53331888.
The previous prime is 99997267. The next prime is 99997357. The reversal of 99997305 is 50379999.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 99997305 - 211 = 99995257 is a prime.
It is a super-2 number, since 2×999973052 = 19998922014526050, which contains 22 as substring.
It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
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, 3333229 + ... + 3333258.
It is an arithmetic number, because the mean of its divisors is an integer number (19999464).
Almost surely, 299997305 is an apocalyptic number.
It is an amenable number.
99997305 is a deficient number, since it is larger than the sum of its proper divisors (59998407).
99997305 is a wasteful number, since it uses less digits than its factorization.
99997305 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6666495.
The product of its (nonzero) digits is 688905, while the sum is 51.
The square root of 99997305 is about 9999.8652490921.
The cubic root of 99997305 is about 464.1547136299.
The spelling of 99997305 in words is "ninety-nine million, nine hundred ninety-seven thousand, three hundred five".