740565 has 24 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 338400.

The previous prime is 740561. The next prime is 740581. The reversal of 740565 is 565047.

It is not a de Polignac number, because 740565 - 2² = 740561 is a prime.

740565 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 861 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (61152).

2⁷⁴⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

740565 is a deficient number, since it is larger than the sum of its proper divisors (727083).

740565 is a wasteful number, since it uses less digits than its factorization.

740565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2366 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 740565 is about 860.5608636233. The cubic root of 740565 is about 90.4734311474.

The spelling of 740565 in words is "seven hundred forty thousand, five hundred sixty-five".