6540660552 has 32 divisors (see below), whose sum is σ = 16535383200. Its totient is φ = 2155722624.

The previous prime is 6540660521. The next prime is 6540660589. The reversal of 6540660552 is 2550660456.

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 6540660552.

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, 1528918 + ... + 1533189.

It is an arithmetic number, because the mean of its divisors is an integer number (516730725).

Almost surely, 2^6540660552 is an apocalyptic number.

It is an amenable number.

6540660552 is an abundant number, since it is smaller than the sum of its proper divisors (9994722648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6540660552 is a wasteful number, since it uses less digits than its factorization.

6540660552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062205 (or 3062201 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 6540660552 is about 80874.3503961547. The cubic root of 6540660552 is about 1870.1389272136.

The spelling of 6540660552 in words is "six billion, five hundred forty million, six hundred sixty thousand, five hundred fifty-two".