1706661 has 12 divisors (see below), whose sum is σ = 2689440. Its totient is φ = 1034280.

The previous prime is 1706659. The next prime is 1706687. The reversal of 1706661 is 1666071.

It is not a de Polignac number, because 1706661 - 2¹ = 1706659 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1706641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8521 + ... + 8718.

It is an arithmetic number, because the mean of its divisors is an integer number (224120).

2^1706661 is an apocalyptic number.

1706661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1706661 is a deficient number, since it is larger than the sum of its proper divisors (982779).

1706661 is a wasteful number, since it uses less digits than its factorization.

1706661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17256 (or 17253 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1706661 is about 1306.3923606635. The cubic root of 1706661 is about 119.5039943110.

The spelling of 1706661 in words is "one million, seven hundred six thousand, six hundred sixty-one".