666480046 has 4 divisors (see below), whose sum is σ = 999720072. Its totient is φ = 333240022.

The previous prime is 666480037. The next prime is 666480071. The reversal of 666480046 is 640084666.

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

It is a junction number, because it is equal to n+sod(n) for n = 666479990 and 666480008.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 166620010 + ... + 166620013.

It is an arithmetic number, because the mean of its divisors is an integer number (249930018).

Almost surely, 2^666480046 is an apocalyptic number.

666480046 is a deficient number, since it is larger than the sum of its proper divisors (333240026).

666480046 is a wasteful number, since it uses less digits than its factorization.

666480046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333240025.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 666480046 is about 25816.2748281002. The cubic root of 666480046 is about 873.4989430447.

The spelling of 666480046 in words is "six hundred sixty-six million, four hundred eighty thousand, forty-six".