743623 has 4 divisors (see below), whose sum is σ = 745360. Its totient is φ = 741888.

The previous prime is 743609. The next prime is 743657. The reversal of 743623 is 326347.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 743623 - 2⁵ = 743591 is a prime.

It is a super-2 number, since 2×743623² = 1105950332258, which contains 22 as substring.

It is a Duffinian number.

743623 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743693) 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 3 ways as a sum of consecutive naturals, for example, 286 + ... + 1252.

It is an arithmetic number, because the mean of its divisors is an integer number (186340).

2⁷⁴³⁶²³ is an apocalyptic number.

743623 is a deficient number, since it is larger than the sum of its proper divisors (1737).

743623 is an equidigital number, since it uses as much as digits as its factorization.

743623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its digits is 3024, while the sum is 25.

The square root of 743623 is about 862.3357814680. The cubic root of 743623 is about 90.5977901665.

Adding to 743623 its product of digits (3024), we get a palindrome (746647).

The spelling of 743623 in words is "seven hundred forty-three thousand, six hundred twenty-three".