1666704 has 40 divisors (see below), whose sum is σ = 4638592. Its totient is φ = 512640.

The previous prime is 1666657. The next prime is 1666711. The reversal of 1666704 is 4076661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712 + ... + 1959.

2^1666704 is an apocalyptic number.

It is an amenable number.

1666704 is an abundant number, since it is smaller than the sum of its proper divisors (2971888).

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

1666704 is a wasteful number, since it uses less digits than its factorization.

1666704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695 (or 2689 counting only the distinct ones).

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

The square root of 1666704 is about 1291.0089077927. The cubic root of 1666704 is about 118.5639954143.

The spelling of 1666704 in words is "one million, six hundred sixty-six thousand, seven hundred four".