743666 has 24 divisors (see below), whose sum is σ = 1404480. Its totient is φ = 289080.

The previous prime is 743657. The next prime is 743669. The reversal of 743666 is 666347.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 743666.

It is not an unprimeable number, because it can be changed into a prime (743669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1475 + ... + 1913.

It is an arithmetic number, because the mean of its divisors is an integer number (58520).

2⁷⁴³⁶⁶⁶ is an apocalyptic number.

743666 is a deficient number, since it is larger than the sum of its proper divisors (660814).

743666 is a wasteful number, since it uses less digits than its factorization.

743666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 459 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 743666 is about 862.3607133909. The cubic root of 743666 is about 90.5995364052.

The spelling of 743666 in words is "seven hundred forty-three thousand, six hundred sixty-six".