1660673 has 8 divisors (see below), whose sum is σ = 1930560. Its totient is φ = 1398960.

The previous prime is 1660667. The next prime is 1660691. The reversal of 1660673 is 3760661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1660673 - 2⁶ = 1660609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1660663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (241320).

2^1660673 is an apocalyptic number.

It is an amenable number.

1660673 is a deficient number, since it is larger than the sum of its proper divisors (269887).

1660673 is an equidigital number, since it uses as much as digits as its factorization.

1660673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1660673 is about 1288.6710208583. The cubic root of 1660673 is about 118.4208138856.

The spelling of 1660673 in words is "one million, six hundred sixty thousand, six hundred seventy-three".