1688070047 has 2 divisors, whose sum is σ = 1688070048. Its totient is φ = 1688070046.

The previous prime is 1688070011. The next prime is 1688070079. The reversal of 1688070047 is 7400708861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1688070047 - 2²⁰ = 1687021471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1688069986 and 1688070013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1688070347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844035023 + 844035024.

It is an arithmetic number, because the mean of its divisors is an integer number (844035024).

Almost surely, 2^1688070047 is an apocalyptic number.

1688070047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688070047 is an equidigital number, since it uses as much as digits as its factorization.

1688070047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1688070047 is about 41086.1296181570. The cubic root of 1688070047 is about 1190.6848321367.

The spelling of 1688070047 in words is "one billion, six hundred eighty-eight million, seventy thousand, forty-seven".