743648005 has 4 divisors (see below), whose sum is σ = 892377612. Its totient is φ = 594918400.

The previous prime is 743647987. The next prime is 743648021. The reversal of 743648005 is 500846347.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136469124 + 607178881 = 11682^2 + 24641^2 .

It is not a de Polignac number, because 743648005 - 2¹¹ = 743645957 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74364796 + ... + 74364805.

It is an arithmetic number, because the mean of its divisors is an integer number (223094403).

Almost surely, 2^743648005 is an apocalyptic number.

It is an amenable number.

743648005 is a deficient number, since it is larger than the sum of its proper divisors (148729607).

743648005 is a wasteful number, since it uses less digits than its factorization.

743648005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148729606.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 743648005 is about 27269.9102492106. The cubic root of 743648005 is about 905.9880563281.

It can be divided in two parts, 74364 and 8005, that added together give a square (82369 = 287²).

The spelling of 743648005 in words is "seven hundred forty-three million, six hundred forty-eight thousand, five".