667455146 has 4 divisors (see below), whose sum is σ = 1001182722. Its totient is φ = 333727572.

The previous prime is 667455143. The next prime is 667455163. The reversal of 667455146 is 641554766.

667455146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 667447225 + 7921 = 25835^2 + 89^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 667455097 and 667455106.

It is not an unprimeable number, because it can be changed into a prime (667455143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166863785 + ... + 166863788.

Almost surely, 2^667455146 is an apocalyptic number.

667455146 is a deficient number, since it is larger than the sum of its proper divisors (333727576).

667455146 is a wasteful number, since it uses less digits than its factorization.

667455146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333727575.

The product of its digits is 604800, while the sum is 44.

The square root of 667455146 is about 25835.1532993323. The cubic root of 667455146 is about 873.9247291205.

The spelling of 667455146 in words is "six hundred sixty-seven million, four hundred fifty-five thousand, one hundred forty-six".