666605302 has 8 divisors (see below), whose sum is σ = 1090808712. Its totient is φ = 303002400.

The previous prime is 666605299. The next prime is 666605321. The reversal of 666605302 is 203506666.

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

It is a super-2 number, since 2×666605302² = 888725257309022408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15150099 + ... + 15150142.

It is an arithmetic number, because the mean of its divisors is an integer number (136351089).

Almost surely, 2^666605302 is an apocalyptic number.

666605302 is a deficient number, since it is larger than the sum of its proper divisors (424203410).

666605302 is a wasteful number, since it uses less digits than its factorization.

666605302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30300254.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 666605302 is about 25818.7006257093. The cubic root of 666605302 is about 873.5536604269.

The spelling of 666605302 in words is "six hundred sixty-six million, six hundred five thousand, three hundred two".