667055145 has 8 divisors (see below), whose sum is σ = 1067288256. Its totient is φ = 355762736.

The previous prime is 667055143. The next prime is 667055219. The reversal of 667055145 is 541550766.

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 667055145 - 2¹ = 667055143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667055141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22235157 + ... + 22235186.

It is an arithmetic number, because the mean of its divisors is an integer number (133411032).

Almost surely, 2^667055145 is an apocalyptic number.

It is an amenable number.

667055145 is a deficient number, since it is larger than the sum of its proper divisors (400233111).

667055145 is a wasteful number, since it uses less digits than its factorization.

667055145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44470351.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 667055145 is about 25827.4107296879. The cubic root of 667055145 is about 873.7501153293.

The spelling of 667055145 in words is "six hundred sixty-seven million, fifty-five thousand, one hundred forty-five".