797820713 has 4 divisors (see below), whose sum is σ = 812873988. Its totient is φ = 782767440.

The previous prime is 797820701. The next prime is 797820781. The reversal of 797820713 is 317028797.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 585010969 + 212809744 = 24187^2 + 14588^2 .

It is a cyclic number.

It is not a de Polignac number, because 797820713 - 2¹⁶ = 797755177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (797820613) by changing a digit.

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, 7526558 + ... + 7526663.

It is an arithmetic number, because the mean of its divisors is an integer number (203218497).

Almost surely, 2^797820713 is an apocalyptic number.

It is an amenable number.

797820713 is a deficient number, since it is larger than the sum of its proper divisors (15053275).

797820713 is a wasteful number, since it uses less digits than its factorization.

797820713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15053274.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 797820713 is about 28245.7202598907. The cubic root of 797820713 is about 927.4740539527.

The spelling of 797820713 in words is "seven hundred ninety-seven million, eight hundred twenty thousand, seven hundred thirteen".