6340540215 has 16 divisors (see below), whose sum is σ = 10146404736. Its totient is φ = 3381108000.

The previous prime is 6340540211. The next prime is 6340540231. The reversal of 6340540215 is 5120450436.

It is not a de Polignac number, because 6340540215 - 2² = 6340540211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340540211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83400 + ... + 140130.

It is an arithmetic number, because the mean of its divisors is an integer number (634150296).

Almost surely, 2^6340540215 is an apocalyptic number.

6340540215 is a deficient number, since it is larger than the sum of its proper divisors (3805864521).

6340540215 is a wasteful number, since it uses less digits than its factorization.

6340540215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64190.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 6340540215 is about 79627.5091598375. The cubic root of 6340540215 is about 1850.8678874047.

The spelling of 6340540215 in words is "six billion, three hundred forty million, five hundred forty thousand, two hundred fifteen".