6517064642 has 32 divisors (see below), whose sum is σ = 10769286528. Its totient is φ = 2933280000.

The previous prime is 6517064641. The next prime is 6517064647. The reversal of 6517064642 is 2464607156.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6517064642.

It is not an unprimeable number, because it can be changed into a prime (6517064641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956267 + ... + 963057.

It is an arithmetic number, because the mean of its divisors is an integer number (336540204).

Almost surely, 2^6517064642 is an apocalyptic number.

6517064642 is a deficient number, since it is larger than the sum of its proper divisors (4252221886).

6517064642 is a wasteful number, since it uses less digits than its factorization.

6517064642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7226.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 6517064642 is about 80728.3385311503. The cubic root of 6517064642 is about 1867.8873299109.

The spelling of 6517064642 in words is "six billion, five hundred seventeen million, sixty-four thousand, six hundred forty-two".