6545000661 has 8 divisors (see below), whose sum is σ = 9185965920. Its totient is φ = 4133684592.

The previous prime is 6545000621. The next prime is 6545000669. The reversal of 6545000661 is 1660005456.

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

It is not a de Polignac number, because 6545000661 - 2⁹ = 6545000149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545000669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57412230 + ... + 57412343.

It is an arithmetic number, because the mean of its divisors is an integer number (1148245740).

Almost surely, 2^6545000661 is an apocalyptic number.

It is an amenable number.

6545000661 is a deficient number, since it is larger than the sum of its proper divisors (2640965259).

6545000661 is a wasteful number, since it uses less digits than its factorization.

6545000661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114824595.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 6545000661 is about 80901.1783659546. The cubic root of 6545000661 is about 1870.5524844329.

The spelling of 6545000661 in words is "six billion, five hundred forty-five million, six hundred sixty-one", and thus it is an aban number.