743533641 has 16 divisors (see below), whose sum is σ = 1166328000. Its totient is φ = 466530624.

The previous prime is 743533621. The next prime is 743533663. The reversal of 743533641 is 146335347.

743533641 is a `hidden beast` number, since 7 + 4 + 3 + 5 + 3 + 3 + 641 = 666.

It is not a de Polignac number, because 743533641 - 2⁹ = 743533129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 743533596 and 743533605.

It is not an unprimeable number, because it can be changed into a prime (743533621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809491 + ... + 810408.

It is an arithmetic number, because the mean of its divisors is an integer number (72895500).

Almost surely, 2^743533641 is an apocalyptic number.

It is an amenable number.

743533641 is a deficient number, since it is larger than the sum of its proper divisors (422794359).

743533641 is a wasteful number, since it uses less digits than its factorization.

743533641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619925 (or 1619919 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 743533641 is about 27267.8132786624. The cubic root of 743533641 is about 905.9416106399.

Adding to 743533641 its reverse (146335347), we get a palindrome (889868988).

The spelling of 743533641 in words is "seven hundred forty-three million, five hundred thirty-three thousand, six hundred forty-one".