716491915 has 4 divisors (see below), whose sum is σ = 859790304. Its totient is φ = 573193528.

The previous prime is 716491913. The next prime is 716491921. The reversal of 716491915 is 519194617.

It is a happy number.

716491915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519194617 = 23 ⋅22573679.

It is a cyclic number.

It is not a de Polignac number, because 716491915 - 2¹ = 716491913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716491913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71649187 + ... + 71649196.

It is an arithmetic number, because the mean of its divisors is an integer number (214947576).

Almost surely, 2^716491915 is an apocalyptic number.

716491915 is a deficient number, since it is larger than the sum of its proper divisors (143298389).

716491915 is a wasteful number, since it uses less digits than its factorization.

716491915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143298388.

The product of its digits is 68040, while the sum is 43.

The square root of 716491915 is about 26767.3666056263. The cubic root of 716491915 is about 894.8229168079.

The spelling of 716491915 in words is "seven hundred sixteen million, four hundred ninety-one thousand, nine hundred fifteen".