1706687 has 2 divisors, whose sum is σ = 1706688. Its totient is φ = 1706686.

The previous prime is 1706659. The next prime is 1706689. The reversal of 1706687 is 7866071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1706687 - 2¹⁴ = 1690303 is a prime.

Together with 1706689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1706689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853343 + 853344.

It is an arithmetic number, because the mean of its divisors is an integer number (853344).

2^1706687 is an apocalyptic number.

1706687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1706687 is an equidigital number, since it uses as much as digits as its factorization.

1706687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 1706687 is about 1306.4023116942. The cubic root of 1706687 is about 119.5046011662.

The spelling of 1706687 in words is "one million, seven hundred six thousand, six hundred eighty-seven".