6540756685 has 8 divisors (see below), whose sum is σ = 7849830240. Its totient is φ = 5231990544.

The previous prime is 6540756671. The next prime is 6540756709. The reversal of 6540756685 is 5866570456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6540756685 - 2⁵ = 6540756653 is a prime.

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, 27115 + ... + 117544.

It is an arithmetic number, because the mean of its divisors is an integer number (981228780).

Almost surely, 2^6540756685 is an apocalyptic number.

It is an amenable number.

6540756685 is a deficient number, since it is larger than the sum of its proper divisors (1309073555).

6540756685 is a wasteful number, since it uses less digits than its factorization.

6540756685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153707.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The square root of 6540756685 is about 80874.9447295020. The cubic root of 6540756685 is about 1870.1480894475.

The spelling of 6540756685 in words is "six billion, five hundred forty million, seven hundred fifty-six thousand, six hundred eighty-five".