743666346 has 80 divisors (see below), whose sum is σ = 1761566400. Its totient is φ = 233839872.

The previous prime is 743666321. The next prime is 743666353. The reversal of 743666346 is 643666347.

743666346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1104666 + ... + 1105338.

It is an arithmetic number, because the mean of its divisors is an integer number (22019580).

Almost surely, 2^743666346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 743666346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880783200).

743666346 is an abundant number, since it is smaller than the sum of its proper divisors (1017900054).

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

743666346 is a wasteful number, since it uses less digits than its factorization.

743666346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1056 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 45.

The square root of 743666346 is about 27270.2465335391. The cubic root of 743666346 is about 905.9955045608.

Subtracting from 743666346 its reverse (643666347), we obtain a palindrome (99999999).

The spelling of 743666346 in words is "seven hundred forty-three million, six hundred sixty-six thousand, three hundred forty-six".