667222277800 has 48 divisors (see below), whose sum is σ = 1670621940540. Its totient is φ = 246358993920.

The previous prime is 667222277783. The next prime is 667222277801. The reversal of 667222277800 is 8772222766.

It can be written as a sum of positive squares in 6 ways, for example, as 286565361124 + 380656916676 = 535318^2 + 616974^2 .

It is not an unprimeable number, because it can be changed into a prime (667222277801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128309377 + ... + 128314576.

Almost surely, 2^667222277800 is an apocalyptic number.

It is an amenable number.

667222277800 is an abundant number, since it is smaller than the sum of its proper divisors (1003399662740).

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

667222277800 is a wasteful number, since it uses less digits than its factorization.

667222277800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256623982 (or 256623973 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 667222277800 in words is "six hundred sixty-seven billion, two hundred twenty-two million, two hundred seventy-seven thousand, eight hundred".