6613840540 has 12 divisors (see below), whose sum is σ = 13889065176. Its totient is φ = 2645536208.

The previous prime is 6613840529. The next prime is 6613840573. The reversal of 6613840540 is 450483166.

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 6613840540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165345994 + ... + 165346033.

It is an arithmetic number, because the mean of its divisors is an integer number (1157422098).

Almost surely, 2^6613840540 is an apocalyptic number.

It is an amenable number.

6613840540 is an abundant number, since it is smaller than the sum of its proper divisors (7275224636).

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

6613840540 is a wasteful number, since it uses less digits than its factorization.

6613840540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330692036 (or 330692034 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 6613840540 is about 81325.5220702579. The cubic root of 6613840540 is about 1877.0877405331.

The spelling of 6613840540 in words is "six billion, six hundred thirteen million, eight hundred forty thousand, five hundred forty".