666320710 has 16 divisors (see below), whose sum is σ = 1308411792. Its totient is φ = 242298400.

The previous prime is 666320687. The next prime is 666320731. The reversal of 666320710 is 17023666.

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 in 7 ways as a sum of consecutive naturals, for example, 3028621 + ... + 3028840.

It is an arithmetic number, because the mean of its divisors is an integer number (81775737).

Almost surely, 2^666320710 is an apocalyptic number.

666320710 is a deficient number, since it is larger than the sum of its proper divisors (642091082).

666320710 is a wasteful number, since it uses less digits than its factorization.

666320710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057479.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 666320710 is about 25813.1886833068. The cubic root of 666320710 is about 873.4293280971.

The spelling of 666320710 in words is "six hundred sixty-six million, three hundred twenty thousand, seven hundred ten".