756240361 has 4 divisors (see below), whose sum is σ = 766599892. Its totient is φ = 745880832.

The previous prime is 756240343. The next prime is 756240389. The reversal of 756240361 is 163042657.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 532917225 + 223323136 = 23085^2 + 14944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-756240361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (756240301) 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, 5179656 + ... + 5179801.

It is an arithmetic number, because the mean of its divisors is an integer number (191649973).

Almost surely, 2^756240361 is an apocalyptic number.

It is an amenable number.

756240361 is a deficient number, since it is larger than the sum of its proper divisors (10359531).

756240361 is a wasteful number, since it uses less digits than its factorization.

756240361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10359530.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 756240361 is about 27499.8247448961. The cubic root of 756240361 is about 911.0732259838.

The spelling of 756240361 in words is "seven hundred fifty-six million, two hundred forty thousand, three hundred sixty-one".