7563601321 has 8 divisors (see below), whose sum is σ = 7854220584. Its totient is φ = 7278036480.

The previous prime is 7563601307. The next prime is 7563601333. The reversal of 7563601321 is 1231063657.

It can be written as a sum of positive squares in 4 ways, for example, as 1264798096 + 6298803225 = 35564^2 + 79365^2 .

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 7563601321 - 2¹¹ = 7563599273 is a prime.

It is a super-3 number, since 3×7563601321³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7563601351) 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 7 ways as a sum of consecutive naturals, for example, 1260556 + ... + 1266541.

It is an arithmetic number, because the mean of its divisors is an integer number (981777573).

Almost surely, 2^7563601321 is an apocalyptic number.

It is an amenable number.

7563601321 is a deficient number, since it is larger than the sum of its proper divisors (290619263).

7563601321 is a wasteful number, since it uses less digits than its factorization.

7563601321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527211.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 7563601321 is about 86968.9675746470. The cubic root of 7563601321 is about 1962.9513810798.

Adding to 7563601321 its reverse (1231063657), we get a palindrome (8794664978).

The spelling of 7563601321 in words is "seven billion, five hundred sixty-three million, six hundred one thousand, three hundred twenty-one".