667234880666 has 16 divisors (see below), whose sum is σ = 1025830241280. Its totient is φ = 325380515040.

The previous prime is 667234880593. The next prime is 667234880687. The reversal of 667234880666 is 666088432766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667234880599 and 667234880608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22246955 + ... + 22276926.

It is an arithmetic number, because the mean of its divisors is an integer number (64114390080).

Almost surely, 2^667234880666 is an apocalyptic number.

667234880666 is a deficient number, since it is larger than the sum of its proper divisors (358595360614).

667234880666 is a wasteful number, since it uses less digits than its factorization.

667234880666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44524069.

The product of its (nonzero) digits is 83607552, while the sum is 62.

The spelling of 667234880666 in words is "six hundred sixty-seven billion, two hundred thirty-four million, eight hundred eighty thousand, six hundred sixty-six".