667143466 has 64 divisors (see below), whose sum is σ = 1181952000. Its totient is φ = 279227520.

The previous prime is 667143443. The next prime is 667143469. The reversal of 667143466 is 664341766.

It is not an unprimeable number, because it can be changed into a prime (667143469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2938845 + ... + 2939071.

It is an arithmetic number, because the mean of its divisors is an integer number (18468000).

Almost surely, 2^667143466 is an apocalyptic number.

667143466 is a deficient number, since it is larger than the sum of its proper divisors (514808534).

667143466 is a wasteful number, since it uses less digits than its factorization.

667143466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its digits is 435456, while the sum is 43.

The square root of 667143466 is about 25829.1205038035. The cubic root of 667143466 is about 873.7886763982.

The spelling of 667143466 in words is "six hundred sixty-seven million, one hundred forty-three thousand, four hundred sixty-six".