1660746 has 32 divisors (see below), whose sum is σ = 3503808. Its totient is φ = 524160.

The previous prime is 1660741. The next prime is 1660751. The reversal of 1660746 is 6470661.

It is an interprime number because it is at equal distance from previous prime (1660741) and next prime (1660751).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1660741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10500 + ... + 10656.

It is an arithmetic number, because the mean of its divisors is an integer number (109494).

2^1660746 is an apocalyptic number.

1660746 is an abundant number, since it is smaller than the sum of its proper divisors (1843062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660746 is a wasteful number, since it uses less digits than its factorization.

1660746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1660746 is about 1288.6993443003. The cubic root of 1660746 is about 118.4225490441.

It can be divided in two parts, 16607 and 46, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 1660746 in words is "one million, six hundred sixty thousand, seven hundred forty-six".