990707713 has 4 divisors (see below), whose sum is σ = 990787140. Its totient is φ = 990628288.

The previous prime is 990707699. The next prime is 990707741. The reversal of 990707713 is 317707099.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 317707099 = 67 ⋅4741897.

It can be written as a sum of positive squares in 2 ways, for example, as 566059264 + 424648449 = 23792^2 + 20607^2 .

It is a cyclic number.

It is not a de Polignac number, because 990707713 - 2¹⁷ = 990576641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990707713.

It is not an unprimeable number, because it can be changed into a prime (990707513) 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, 16468 + ... + 47461.

It is an arithmetic number, because the mean of its divisors is an integer number (247696785).

It is a Proth number, since it is equal to 15117 ⋅ 2¹⁶ + 1 and 15117 < 2¹⁶.

Almost surely, 2^990707713 is an apocalyptic number.

It is an amenable number.

990707713 is a deficient number, since it is larger than the sum of its proper divisors (79427).

990707713 is a wasteful number, since it uses less digits than its factorization.

990707713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79426.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 990707713 is about 31475.5097337597. The cubic root of 990707713 is about 996.8929270964.

The spelling of 990707713 in words is "nine hundred ninety million, seven hundred seven thousand, seven hundred thirteen".