6540648758 has 16 divisors (see below), whose sum is σ = 11229217440. Its totient is φ = 2798966016.

The previous prime is 6540648707. The next prime is 6540648791. The reversal of 6540648758 is 8578460456.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337673 + ... + 356516.

It is an arithmetic number, because the mean of its divisors is an integer number (701826090).

Almost surely, 2^6540648758 is an apocalyptic number.

6540648758 is a deficient number, since it is larger than the sum of its proper divisors (4688568682).

6540648758 is a wasteful number, since it uses less digits than its factorization.

6540648758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694871.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The square root of 6540648758 is about 80874.2774805438. The cubic root of 6540648758 is about 1870.1378031461.

The spelling of 6540648758 in words is "six billion, five hundred forty million, six hundred forty-eight thousand, seven hundred fifty-eight".