1668764 has 6 divisors (see below), whose sum is σ = 2920344. Its totient is φ = 834380.

The previous prime is 1668757. The next prime is 1668773. The reversal of 1668764 is 4678661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208592 + ... + 208599.

It is an arithmetic number, because the mean of its divisors is an integer number (486724).

2^1668764 is an apocalyptic number.

It is an amenable number.

1668764 is a deficient number, since it is larger than the sum of its proper divisors (1251580).

1668764 is a wasteful number, since it uses less digits than its factorization.

1668764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417195 (or 417193 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 1668764 is about 1291.8064870560. The cubic root of 1668764 is about 118.6128225754.

The spelling of 1668764 in words is "one million, six hundred sixty-eight thousand, seven hundred sixty-four".