500146666 has 4 divisors (see below), whose sum is σ = 750220002. Its totient is φ = 250073332.

The previous prime is 500146663. The next prime is 500146687. The reversal of 500146666 is 666641005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666641005 = 5 ⋅133328201.

It can be written as a sum of positive squares in only one way, i.e., 497959225 + 2187441 = 22315^2 + 1479^2 .

It is not an unprimeable number, because it can be changed into a prime (500146663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125036665 + ... + 125036668.

Almost surely, 2^500146666 is an apocalyptic number.

500146666 is a deficient number, since it is larger than the sum of its proper divisors (250073336).

500146666 is a wasteful number, since it uses less digits than its factorization.

500146666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250073335.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 500146666 is about 22363.9590859937. The cubic root of 500146666 is about 793.7781243181.

The spelling of 500146666 in words is "five hundred million, one hundred forty-six thousand, six hundred sixty-six".