6667428210 has 64 divisors (see below), whose sum is σ = 16395236352. Its totient is φ = 1734376896.

The previous prime is 6667428139. The next prime is 6667428221. The reversal of 6667428210 is 128247666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1141317 + ... + 1147143.

It is an arithmetic number, because the mean of its divisors is an integer number (256175568).

Almost surely, 2^6667428210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6667428210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8197618176).

6667428210 is an abundant number, since it is smaller than the sum of its proper divisors (9727808142).

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

6667428210 is a wasteful number, since it uses less digits than its factorization.

6667428210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 6667428210 is about 81654.3214410603. The cubic root of 6667428210 is about 1882.1437190049.

The spelling of 6667428210 in words is "six billion, six hundred sixty-seven million, four hundred twenty-eight thousand, two hundred ten".