991676258 has 8 divisors (see below), whose sum is σ = 1487695440. Its totient is φ = 495777780.

The previous prime is 991676243. The next prime is 991676261. The reversal of 991676258 is 852676199.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5648 + ... + 44891.

It is an arithmetic number, because the mean of its divisors is an integer number (185961930).

Almost surely, 2^991676258 is an apocalyptic number.

991676258 is a deficient number, since it is larger than the sum of its proper divisors (496019182).

991676258 is a wasteful number, since it uses less digits than its factorization.

991676258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60352.

The product of its digits is 1632960, while the sum is 53.

The square root of 991676258 is about 31490.8916672742. The cubic root of 991676258 is about 997.2176852375.

The spelling of 991676258 in words is "nine hundred ninety-one million, six hundred seventy-six thousand, two hundred fifty-eight".