666167055 has 48 divisors (see below), whose sum is σ = 1144842720. Its totient is φ = 330511104.

The previous prime is 666167041. The next prime is 666167059. The reversal of 666167055 is 550761666.

It is not a de Polignac number, because 666167055 - 2⁴ = 666167039 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 666166998 and 666167016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666167059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 292461 + ... + 294729.

It is an arithmetic number, because the mean of its divisors is an integer number (23850890).

Almost surely, 2^666167055 is an apocalyptic number.

666167055 is a deficient number, since it is larger than the sum of its proper divisors (478675665).

666167055 is a wasteful number, since it uses less digits than its factorization.

666167055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 666167055 is about 25810.2122230717. The cubic root of 666167055 is about 873.3621847036.

The spelling of 666167055 in words is "six hundred sixty-six million, one hundred sixty-seven thousand, fifty-five".