1660704 has 24 divisors (see below), whose sum is σ = 4359600. Its totient is φ = 553536.

The previous prime is 1660699. The next prime is 1660709. The reversal of 1660704 is 4070661.

It is an interprime number because it is at equal distance from previous prime (1660699) and next prime (1660709).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1660709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8554 + ... + 8745.

It is an arithmetic number, because the mean of its divisors is an integer number (181650).

2^1660704 is an apocalyptic number.

It is an amenable number.

1660704 is an abundant number, since it is smaller than the sum of its proper divisors (2698896).

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

1660704 is a wasteful number, since it uses less digits than its factorization.

1660704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17312 (or 17304 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1660704 is about 1288.6830486974. The cubic root of 1660704 is about 118.4215507399.

1660704 divided by its sum of digits (24) gives a palindrome (69196).

The spelling of 1660704 in words is "one million, six hundred sixty thousand, seven hundred four".