667231422066 has 24 divisors (see below), whose sum is σ = 1577092452624. Its totient is φ = 202191339960.

The previous prime is 667231422019. The next prime is 667231422089. The reversal of 667231422066 is 660224132766.

667231422066 is a `hidden beast` number, since 66 + 72 + 314 + 2 + 206 + 6 = 666.

667231422066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1684927636 + ... + 1684928031.

It is an arithmetic number, because the mean of its divisors is an integer number (65712185526).

Almost surely, 2^667231422066 is an apocalyptic number.

667231422066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

667231422066 is an abundant number, since it is smaller than the sum of its proper divisors (909861030558).

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

667231422066 is a wasteful number, since it uses less digits than its factorization.

667231422066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369855686 (or 3369855683 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 667231422066 in words is "six hundred sixty-seven billion, two hundred thirty-one million, four hundred twenty-two thousand, sixty-six".