39660506 has 8 divisors (see below), whose sum is σ = 59517504. Its totient is φ = 19821340.

The previous prime is 39660503. The next prime is 39660521. The reversal of 39660506 is 60506693.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39660503) 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, 6221 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (7439688).

Almost surely, 2^39660506 is an apocalyptic number.

39660506 is a deficient number, since it is larger than the sum of its proper divisors (19856998).

39660506 is a wasteful number, since it uses less digits than its factorization.

39660506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 39660506 is about 6297.6587713213. The cubic root of 39660506 is about 341.0248947692.

The spelling of 39660506 in words is "thirty-nine million, six hundred sixty thousand, five hundred six".