7240533665 has 8 divisors (see below), whose sum is σ = 9199737000. Its totient is φ = 5451695872.

The previous prime is 7240533649. The next prime is 7240533683. The reversal of 7240533665 is 5663350427.

7240533665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2058981376 + 5181552289 = 45376^2 + 71983^2 .

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 7240533665 - 2⁴ = 7240533649 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42591290 + ... + 42591459.

It is an arithmetic number, because the mean of its divisors is an integer number (1149967125).

Almost surely, 2^7240533665 is an apocalyptic number.

It is an amenable number.

7240533665 is a deficient number, since it is larger than the sum of its proper divisors (1959203335).

7240533665 is a wasteful number, since it uses less digits than its factorization.

7240533665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85182771.

The product of its (nonzero) digits is 453600, while the sum is 41.

The square root of 7240533665 is about 85091.3254392009. The cubic root of 7240533665 is about 1934.5955852592.

The spelling of 7240533665 in words is "seven billion, two hundred forty million, five hundred thirty-three thousand, six hundred sixty-five".