1688070013 has 8 divisors (see below), whose sum is σ = 1931797760. Its totient is φ = 1444986000.

The previous prime is 1688070011. The next prime is 1688070047. The reversal of 1688070013 is 3100708861.

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

It is a cyclic number.

It is not a de Polignac number, because 1688070013 - 2¹ = 1688070011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688070011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155298 + ... + 165811.

It is an arithmetic number, because the mean of its divisors is an integer number (241474720).

Almost surely, 2^1688070013 is an apocalyptic number.

It is an amenable number.

1688070013 is a deficient number, since it is larger than the sum of its proper divisors (243727747).

1688070013 is an equidigital number, since it uses as much as digits as its factorization.

1688070013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321867.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1688070013 is about 41086.1292043921. The cubic root of 1688070013 is about 1190.6848241427.

Adding to 1688070013 its reverse (3100708861), we get a palindrome (4788778874).

The spelling of 1688070013 in words is "one billion, six hundred eighty-eight million, seventy thousand, thirteen".