666361466 has 4 divisors (see below), whose sum is σ = 999542202. Its totient is φ = 333180732.

The previous prime is 666361463. The next prime is 666361469. The reversal of 666361466 is 664163666.

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

It is an interprime number because it is at equal distance from previous prime (666361463) and next prime (666361469).

It can be written as a sum of positive squares in only one way, i.e., 564775225 + 101586241 = 23765^2 + 10079^2 .

It is not an unprimeable number, because it can be changed into a prime (666361463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166590365 + ... + 166590368.

Almost surely, 2^666361466 is an apocalyptic number.

666361466 is a deficient number, since it is larger than the sum of its proper divisors (333180736).

666361466 is a wasteful number, since it uses less digits than its factorization.

666361466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333180735.

The product of its digits is 559872, while the sum is 44.

The square root of 666361466 is about 25813.9781126428. The cubic root of 666361466 is about 873.4471357181.

The spelling of 666361466 in words is "six hundred sixty-six million, three hundred sixty-one thousand, four hundred sixty-six".