753666 has 16 divisors (see below), whose sum is σ = 1533600. Its totient is φ = 246848.

The previous prime is 753659. The next prime is 753677. The reversal of 753666 is 666357.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (95850).

2⁷⁵³⁶⁶⁶ is an apocalyptic number.

753666 is an abundant number, since it is smaller than the sum of its proper divisors (779934).

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

753666 is a wasteful number, since it uses less digits than its factorization.

753666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193.

The product of its digits is 22680, while the sum is 33.

The square root of 753666 is about 868.1393897296. The cubic root of 753666 is about 91.0038238541.

It can be divided in two parts, 75 and 3666, that added together give a triangular number (3741 = T₈₆).

The spelling of 753666 in words is "seven hundred fifty-three thousand, six hundred sixty-six".