752065009 has 4 divisors (see below), whose sum is σ = 770408100. Its totient is φ = 733721920.

The previous prime is 752065003. The next prime is 752065021. The reversal of 752065009 is 900560257.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900560257 = 107 ⋅8416451.

It can be written as a sum of positive squares in 2 ways, for example, as 431475984 + 320589025 = 20772^2 + 17905^2 .

It is a cyclic number.

It is not a de Polignac number, because 752065009 - 2⁷ = 752064881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (752065003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9171484 + ... + 9171565.

It is an arithmetic number, because the mean of its divisors is an integer number (192602025).

Almost surely, 2^752065009 is an apocalyptic number.

It is an amenable number.

752065009 is a deficient number, since it is larger than the sum of its proper divisors (18343091).

752065009 is a wasteful number, since it uses less digits than its factorization.

752065009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18343090.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 752065009 is about 27423.8036931422. The cubic root of 752065009 is about 909.3933923670.

The spelling of 752065009 in words is "seven hundred fifty-two million, sixty-five thousand, nine".