740563 has 4 divisors (see below), whose sum is σ = 779560. Its totient is φ = 701568.

The previous prime is 740561. The next prime is 740581. The reversal of 740563 is 365047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365047 = 19 ⋅19213.

It is a cyclic number.

It is not a de Polignac number, because 740563 - 2¹ = 740561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19470 + ... + 19507.

It is an arithmetic number, because the mean of its divisors is an integer number (194890).

2⁷⁴⁰⁵⁶³ is an apocalyptic number.

740563 is a deficient number, since it is larger than the sum of its proper divisors (38997).

740563 is a wasteful number, since it uses less digits than its factorization.

740563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38996.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 740563 is about 860.5597015896. The cubic root of 740563 is about 90.4733497020.

The spelling of 740563 in words is "seven hundred forty thousand, five hundred sixty-three".