8039666 has 4 divisors (see below), whose sum is σ = 12059502. Its totient is φ = 4019832.

The previous prime is 8039653. The next prime is 8039671. The reversal of 8039666 is 6669308.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 5621641 + 2418025 = 2371^2 + 1555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2009915 + ... + 2009918.

Almost surely, 2^8039666 is an apocalyptic number.

8039666 is a deficient number, since it is larger than the sum of its proper divisors (4019836).

8039666 is a wasteful number, since it uses less digits than its factorization.

8039666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019835.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 8039666 is about 2835.4304787810. The cubic root of 8039666 is about 200.3300051834.

The spelling of 8039666 in words is "eight million, thirty-nine thousand, six hundred sixty-six".