743816 has 16 divisors (see below), whose sum is σ = 1409100. Its totient is φ = 368064.

The previous prime is 743803. The next prime is 743819. The reversal of 743816 is 618347.

It can be written as a sum of positive squares in 2 ways, for example, as 722500 + 21316 = 850^2 + 146^2 .

It is an alternating number because its digits alternate between odd and even.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 743816.

It is not an unprimeable number, because it can be changed into a prime (743819) by changing a digit.

743816 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446 + ... + 1298.

2⁷⁴³⁸¹⁶ is an apocalyptic number.

It is an amenable number.

743816 is a deficient number, since it is larger than the sum of its proper divisors (665284).

743816 is a wasteful number, since it uses less digits than its factorization.

743816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 964 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 743816 is about 862.4476795725. The cubic root of 743816 is about 90.6056274088.

The spelling of 743816 in words is "seven hundred forty-three thousand, eight hundred sixteen".