39660505 has 8 divisors (see below), whose sum is σ = 50097600. Its totient is φ = 30058416.

The previous prime is 39660503. The next prime is 39660521. The reversal of 39660505 is 50506693.

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

It is a cyclic number.

It is not a de Polignac number, because 39660505 - 2¹ = 39660503 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 208645 + ... + 208834.

It is an arithmetic number, because the mean of its divisors is an integer number (6262200).

Almost surely, 2^39660505 is an apocalyptic number.

It is an amenable number.

39660505 is a deficient number, since it is larger than the sum of its proper divisors (10437095).

39660505 is a wasteful number, since it uses less digits than its factorization.

39660505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417503.

The product of its (nonzero) digits is 24300, while the sum is 34.

The square root of 39660505 is about 6297.6586919267. The cubic root of 39660505 is about 341.0248919030.

The spelling of 39660505 in words is "thirty-nine million, six hundred sixty thousand, five hundred five".