743680505 has 8 divisors (see below), whose sum is σ = 931217472. Its totient is φ = 569077168.

The previous prime is 743680489. The next prime is 743680507. The reversal of 743680505 is 505086347.

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 743680505 - 2⁴ = 743680489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (743680507) by changing a digit.

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, 3233279 + ... + 3233508.

It is an arithmetic number, because the mean of its divisors is an integer number (116402184).

Almost surely, 2^743680505 is an apocalyptic number.

It is an amenable number.

743680505 is a deficient number, since it is larger than the sum of its proper divisors (187536967).

743680505 is a wasteful number, since it uses less digits than its factorization.

743680505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466815.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 743680505 is about 27270.5061375839. The cubic root of 743680505 is about 906.0012544104.

The spelling of 743680505 in words is "seven hundred forty-three million, six hundred eighty thousand, five hundred five".