667410145 has 4 divisors (see below), whose sum is σ = 800892180. Its totient is φ = 533928112.

The previous prime is 667410143. The next prime is 667410167. The reversal of 667410145 is 541014766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82882816 + 584527329 = 9104^2 + 24177^2 .

It is a cyclic number.

It is not a de Polignac number, because 667410145 - 2¹ = 667410143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667410145.

It is not an unprimeable number, because it can be changed into a prime (667410143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 66741010 + ... + 66741019.

It is an arithmetic number, because the mean of its divisors is an integer number (200223045).

Almost surely, 2^667410145 is an apocalyptic number.

It is an amenable number.

667410145 is a deficient number, since it is larger than the sum of its proper divisors (133482035).

667410145 is a wasteful number, since it uses less digits than its factorization.

667410145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133482034.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 667410145 is about 25834.2823589122. The cubic root of 667410145 is about 873.9050881649.

The spelling of 667410145 in words is "six hundred sixty-seven million, four hundred ten thousand, one hundred forty-five".