740605 has 8 divisors (see below), whose sum is σ = 941112. Its totient is φ = 557568.

The previous prime is 740603. The next prime is 740651. The reversal of 740605 is 506047.

It can be written as a sum of positive squares in 4 ways, for example, as 363609 + 376996 = 603^2 + 614^2 .

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 740605 - 2¹ = 740603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740603) 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, 4272 + ... + 4441.

It is an arithmetic number, because the mean of its divisors is an integer number (117639).

2⁷⁴⁰⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

740605 is a deficient number, since it is larger than the sum of its proper divisors (200507).

740605 is a wasteful number, since it uses less digits than its factorization.

740605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8735.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 740605 is about 860.5841039666. The cubic root of 740605 is about 90.4750600263.

The spelling of 740605 in words is "seven hundred forty thousand, six hundred five".