666264167 has 8 divisors (see below), whose sum is σ = 678073680. Its totient is φ = 654472000.

The previous prime is 666264149. The next prime is 666264169. The reversal of 666264167 is 761462666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666264167 - 2⁶ = 666264103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666264169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91667 + ... + 98667.

It is an arithmetic number, because the mean of its divisors is an integer number (84759210).

Almost surely, 2^666264167 is an apocalyptic number.

666264167 is a deficient number, since it is larger than the sum of its proper divisors (11809513).

666264167 is a wasteful number, since it uses less digits than its factorization.

666264167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673.

The product of its digits is 435456, while the sum is 44.

The square root of 666264167 is about 25812.0934253694. The cubic root of 666264167 is about 873.4046214202.

The spelling of 666264167 in words is "six hundred sixty-six million, two hundred sixty-four thousand, one hundred sixty-seven".