6667021376 has 28 divisors (see below), whose sum is σ = 14008100508. Its totient is φ = 3137421312.

The previous prime is 6667021373. The next prime is 6667021399. The reversal of 6667021376 is 6731207666.

It can be written as a sum of positive squares in 2 ways, for example, as 3071819776 + 3595201600 = 55424^2 + 59960^2 .

It is not an unprimeable number, because it can be changed into a prime (6667021373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3062801 + ... + 3064976.

Almost surely, 2^6667021376 is an apocalyptic number.

It is an amenable number.

6667021376 is an abundant number, since it is smaller than the sum of its proper divisors (7341079132).

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

6667021376 is a wasteful number, since it uses less digits than its factorization.

6667021376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6127806 (or 6127796 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 6667021376 is about 81651.8302060646. The cubic root of 6667021376 is about 1882.1054365963.

The spelling of 6667021376 in words is "six billion, six hundred sixty-seven million, twenty-one thousand, three hundred seventy-six".