6651678147 has 8 divisors (see below), whose sum is σ = 8876010000. Its totient is φ = 4430899200.

The previous prime is 6651678107. The next prime is 6651678157. The reversal of 6651678147 is 7418761566.

It is a happy number.

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

It is not a de Polignac number, because 6651678147 - 2²⁴ = 6634900931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6651678147.

It is not an unprimeable number, because it can be changed into a prime (6651678107) 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, 883854 + ... + 891347.

It is an arithmetic number, because the mean of its divisors is an integer number (1109501250).

Almost surely, 2^6651678147 is an apocalyptic number.

6651678147 is a deficient number, since it is larger than the sum of its proper divisors (2224331853).

6651678147 is a wasteful number, since it uses less digits than its factorization.

6651678147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776453.

The product of its digits is 1693440, while the sum is 51.

The square root of 6651678147 is about 81557.8208818750. The cubic root of 6651678147 is about 1880.6605256915.

The spelling of 6651678147 in words is "six billion, six hundred fifty-one million, six hundred seventy-eight thousand, one hundred forty-seven".