1285715713 has 8 divisors (see below), whose sum is σ = 1298297000. Its totient is φ = 1273148928.

The previous prime is 1285715699. The next prime is 1285715723. The reversal of 1285715713 is 3175175821.

It can be written as a sum of positive squares in 4 ways, for example, as 494306289 + 791409424 = 22233^2 + 28132^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1285715713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285715723) by changing a digit.

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, 280363 + ... + 284911.

It is an arithmetic number, because the mean of its divisors is an integer number (162287125).

Almost surely, 2^1285715713 is an apocalyptic number.

It is an amenable number.

1285715713 is a deficient number, since it is larger than the sum of its proper divisors (12581287).

1285715713 is a wasteful number, since it uses less digits than its factorization.

1285715713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251.

The product of its digits is 58800, while the sum is 40.

The square root of 1285715713 is about 35856.8781825747. The cubic root of 1285715713 is about 1087.3807753738.

The spelling of 1285715713 in words is "one billion, two hundred eighty-five million, seven hundred fifteen thousand, seven hundred thirteen".