665606006 has 32 divisors (see below), whose sum is σ = 1099617120. Its totient is φ = 300301056.

The previous prime is 665605979. The next prime is 665606009. The reversal of 665606006 is 600606566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665606009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237260 + ... + 240048.

It is an arithmetic number, because the mean of its divisors is an integer number (34363035).

Almost surely, 2^665606006 is an apocalyptic number.

665606006 is a deficient number, since it is larger than the sum of its proper divisors (434011114).

665606006 is a wasteful number, since it uses less digits than its factorization.

665606006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 665606006 is about 25799.3411931390. The cubic root of 665606006 is about 873.1169326051.

The spelling of 665606006 in words is "six hundred sixty-five million, six hundred six thousand, six".