6660224878 has 16 divisors (see below), whose sum is σ = 10581242544. Its totient is φ = 3133264000.

The previous prime is 6660224821. The next prime is 6660224891. The reversal of 6660224878 is 8784220666.

It is a super-2 number, since 2×6660224878² = 88717190851060229768, which contains 22 as substring.

It is a congruent number.

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, 89628 + ... + 146128.

It is an arithmetic number, because the mean of its divisors is an integer number (661327659).

Almost surely, 2^6660224878 is an apocalyptic number.

6660224878 is a deficient number, since it is larger than the sum of its proper divisors (3921017666).

6660224878 is a wasteful number, since it uses less digits than its factorization.

6660224878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59987.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The square root of 6660224878 is about 81610.2008207307. The cubic root of 6660224878 is about 1881.4656668854.

The spelling of 6660224878 in words is "six billion, six hundred sixty million, two hundred twenty-four thousand, eight hundred seventy-eight".