6466666600 has 24 divisors (see below), whose sum is σ = 15035000310. Its totient is φ = 2586666560.

The previous prime is 6466666579. The next prime is 6466666607. The reversal of 6466666600 is 66666646.

It can be written as a sum of positive squares in 3 ways, for example, as 5056063236 + 1410603364 = 71106^2 + 37558^2 .

It is not an unprimeable number, because it can be changed into a prime (6466666607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16166467 + ... + 16166866.

Almost surely, 2^6466666600 is an apocalyptic number.

It is an amenable number.

6466666600 is an abundant number, since it is smaller than the sum of its proper divisors (8568333710).

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

6466666600 is a wasteful number, since it uses less digits than its factorization.

6466666600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32333349 (or 32333340 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 46.

The square root of 6466666600 is about 80415.5867975855. The cubic root of 6466666600 is about 1863.0599226407.

Adding to 6466666600 its sum of digits (46), we get a palindrome (6466666646).

The spelling of 6466666600 in words is "six billion, four hundred sixty-six million, six hundred sixty-six thousand, six hundred".