1709668 has 6 divisors (see below), whose sum is σ = 2991926. Its totient is φ = 854832.

The previous prime is 1709663. The next prime is 1709671. The reversal of 1709668 is 8669071.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 191844 = 1232^2 + 438^2 .

It is not an unprimeable number, because it can be changed into a prime (1709663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213705 + ... + 213712.

2^1709668 is an apocalyptic number.

It is an amenable number.

1709668 is a deficient number, since it is larger than the sum of its proper divisors (1282258).

1709668 is a wasteful number, since it uses less digits than its factorization.

1709668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427421 (or 427419 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1709668 is about 1307.5427335273. The cubic root of 1709668 is about 119.5741386200.

The spelling of 1709668 in words is "one million, seven hundred nine thousand, six hundred sixty-eight".