743664445 has 8 divisors (see below), whose sum is σ = 900738144. Its totient is φ = 589371024.

The previous prime is 743664433. The next prime is 743664457. The reversal of 743664445 is 544466347.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (743664433) and next prime (743664457).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 743664445 - 2¹⁹ = 743140157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694479 + ... + 695548.

It is an arithmetic number, because the mean of its divisors is an integer number (112592268).

Almost surely, 2^743664445 is an apocalyptic number.

It is an amenable number.

743664445 is a deficient number, since it is larger than the sum of its proper divisors (157073699).

743664445 is a wasteful number, since it uses less digits than its factorization.

743664445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390139.

The product of its digits is 967680, while the sum is 43.

The square root of 743664445 is about 27270.2116786797. The cubic root of 743664445 is about 905.9947325753.

The spelling of 743664445 in words is "seven hundred forty-three million, six hundred sixty-four thousand, four hundred forty-five".