6730521365 has 4 divisors (see below), whose sum is σ = 8076625644. Its totient is φ = 5384417088.

The previous prime is 6730521361. The next prime is 6730521389. The reversal of 6730521365 is 5631250376.

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 1208396644 + 5522124721 = 34762^2 + 74311^2 .

It is a cyclic number.

It is not a de Polignac number, because 6730521365 - 2² = 6730521361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6730521361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673052132 + ... + 673052141.

It is an arithmetic number, because the mean of its divisors is an integer number (2019156411).

Almost surely, 2^6730521365 is an apocalyptic number.

It is an amenable number.

6730521365 is a deficient number, since it is larger than the sum of its proper divisors (1346104279).

6730521365 is a wasteful number, since it uses less digits than its factorization.

6730521365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346104278.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 6730521365 is about 82039.7547838851. The cubic root of 6730521365 is about 1888.0619313696.

The spelling of 6730521365 in words is "six billion, seven hundred thirty million, five hundred twenty-one thousand, three hundred sixty-five".