307666 has 8 divisors (see below), whose sum is σ = 488700. Its totient is φ = 144768.

The previous prime is 307651. The next prime is 307669. The reversal of 307666 is 666703.

It can be written as a sum of positive squares in 2 ways, for example, as 275625 + 32041 = 525^2 + 179^2 .

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 (307669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4491 + ... + 4558.

2³⁰⁷⁶⁶⁶ is an apocalyptic number.

307666 is a deficient number, since it is larger than the sum of its proper divisors (181034).

307666 is a wasteful number, since it uses less digits than its factorization.

307666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 307666 is about 554.6764822849. The cubic root of 307666 is about 67.5087140099.

The spelling of 307666 in words is "three hundred seven thousand, six hundred sixty-six".