734005721 has 8 divisors (see below), whose sum is σ = 750714240. Its totient is φ = 717342768.

The previous prime is 734005711. The next prime is 734005733. The reversal of 734005721 is 127500437.

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 734005721 - 2¹⁰ = 734004697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (734005711) 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 7 ways as a sum of consecutive naturals, for example, 22310 + ... + 44336.

It is an arithmetic number, because the mean of its divisors is an integer number (93839280).

Almost surely, 2^734005721 is an apocalyptic number.

It is an amenable number.

734005721 is a deficient number, since it is larger than the sum of its proper divisors (16708519).

734005721 is a wasteful number, since it uses less digits than its factorization.

734005721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22783.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 734005721 is about 27092.5399510640. The cubic root of 734005721 is about 902.0552704319.

The spelling of 734005721 in words is "seven hundred thirty-four million, five thousand, seven hundred twenty-one".