6547060666 has 8 divisors (see below), whose sum is σ = 9821417940. Its totient is φ = 3273254688.

The previous prime is 6547060633. The next prime is 6547060669. The reversal of 6547060666 is 6660607456.

It can be written as a sum of positive squares in 2 ways, for example, as 5238140625 + 1308920041 = 72375^2 + 36179^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6547060669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106731 + ... + 156478.

Almost surely, 2^6547060666 is an apocalyptic number.

6547060666 is a deficient number, since it is larger than the sum of its proper divisors (3274357274).

6547060666 is a wasteful number, since it uses less digits than its factorization.

6547060666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275648.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The square root of 6547060666 is about 80913.9089773816. The cubic root of 6547060666 is about 1870.7487127435.

The spelling of 6547060666 in words is "six billion, five hundred forty-seven million, sixty thousand, six hundred sixty-six".