740569 has 8 divisors (see below), whose sum is σ = 767880. Its totient is φ = 713856.

The previous prime is 740561. The next prime is 740581. The reversal of 740569 is 965047.

It can be written as a sum of positive squares in 4 ways, for example, as 40000 + 700569 = 200^2 + 837^2 .

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 740569 - 2³ = 740561 is a prime.

It is a super-2 number, since 2×740569² = 1096884887522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 740569.

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 7 ways as a sum of consecutive naturals, for example, 4639 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (95985).

2⁷⁴⁰⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

740569 is a deficient number, since it is larger than the sum of its proper divisors (27311).

740569 is a wasteful number, since it uses less digits than its factorization.

740569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 740569 is about 860.5631876858. The cubic root of 740569 is about 90.4735940380.

The spelling of 740569 in words is "seven hundred forty thousand, five hundred sixty-nine".