99997258 has 8 divisors (see below), whose sum is σ = 154834560. Its totient is φ = 48385740.

The previous prime is 99997243. The next prime is 99997267. The reversal of 99997258 is 85279999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806368 + ... + 806491.

It is an arithmetic number, because the mean of its divisors is an integer number (19354320).

Almost surely, 2^99997258 is an apocalyptic number.

99997258 is a deficient number, since it is larger than the sum of its proper divisors (54837302).

99997258 is a wasteful number, since it uses less digits than its factorization.

99997258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612892.

The product of its digits is 3674160, while the sum is 58.

The square root of 99997258 is about 9999.8628990602. The cubic root of 99997258 is about 464.1546409103.

The spelling of 99997258 in words is "ninety-nine million, nine hundred ninety-seven thousand, two hundred fifty-eight".