740545 has 8 divisors (see below), whose sum is σ = 957096. Its totient is φ = 546816.

The previous prime is 740533. The next prime is 740549. The reversal of 740545 is 545047.

740545 = 608² + 609².

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 693889 = 216^2 + 833^2 .

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 740545 - 2⁵ = 740513 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5632 + ... + 5761.

It is an arithmetic number, because the mean of its divisors is an integer number (119637).

2⁷⁴⁰⁵⁴⁵ is an apocalyptic number.

740545 is the 609-th centered square number.

It is an amenable number.

740545 is a deficient number, since it is larger than the sum of its proper divisors (216551).

740545 is a wasteful number, since it uses less digits than its factorization.

740545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11411.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 740545 is about 860.5492432162. The cubic root of 740545 is about 90.4726166860.

The spelling of 740545 in words is "seven hundred forty thousand, five hundred forty-five".