491798715 has 8 divisors (see below), whose sum is σ = 786877968. Its totient is φ = 262292640.

The previous prime is 491798707. The next prime is 491798743. The reversal of 491798715 is 517897194.

It is a happy number.

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

It is not a de Polignac number, because 491798715 - 2³ = 491798707 is a prime.

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, 16393276 + ... + 16393305.

It is an arithmetic number, because the mean of its divisors is an integer number (98359746).

Almost surely, 2^491798715 is an apocalyptic number.

491798715 is a deficient number, since it is larger than the sum of its proper divisors (295079253).

491798715 is a wasteful number, since it uses less digits than its factorization.

491798715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32786589.

The product of its digits is 635040, while the sum is 51.

The square root of 491798715 is about 22176.5352343417. The cubic root of 491798715 is about 789.3370045009.

The spelling of 491798715 in words is "four hundred ninety-one million, seven hundred ninety-eight thousand, seven hundred fifteen".