6340005513 has 20 divisors (see below), whose sum is σ = 9577297620. Its totient is φ = 4179174912.

The previous prime is 6340005479. The next prime is 6340005523. The reversal of 6340005513 is 3155000436.

It can be written as a sum of positive squares in 2 ways, for example, as 3238406649 + 3101598864 = 56907^2 + 55692^2 .

It is not a de Polignac number, because 6340005513 - 2⁸ = 6340005257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6340005523) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 432520 + ... + 446937.

It is an arithmetic number, because the mean of its divisors is an integer number (478864881).

Almost surely, 2^6340005513 is an apocalyptic number.

It is an amenable number.

6340005513 is a deficient number, since it is larger than the sum of its proper divisors (3237292107).

6340005513 is an equidigital number, since it uses as much as digits as its factorization.

6340005513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879558 (or 879549 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 6340005513 is about 79624.1515684783. The cubic root of 6340005513 is about 1850.8158576329.

Adding to 6340005513 its reverse (3155000436), we get a palindrome (9495005949).

The spelling of 6340005513 in words is "six billion, three hundred forty million, five thousand, five hundred thirteen".