666659002 has 8 divisors (see below), whose sum is σ = 1043466336. Its totient is φ = 318836892.

The previous prime is 666658991. The next prime is 666659009. The reversal of 666659002 is 200956666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (666659009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7246248 + ... + 7246339.

It is an arithmetic number, because the mean of its divisors is an integer number (130433292).

Almost surely, 2^666659002 is an apocalyptic number.

666659002 is a deficient number, since it is larger than the sum of its proper divisors (376807334).

666659002 is a wasteful number, since it uses less digits than its factorization.

666659002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14492612.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 666659002 is about 25819.7405486577. The cubic root of 666659002 is about 873.5771168719.

The spelling of 666659002 in words is "six hundred sixty-six million, six hundred fifty-nine thousand, two".