665316006 has 16 divisors (see below), whose sum is σ = 1333641024. Its totient is φ = 221270504.

The previous prime is 665315957. The next prime is 665316007. The reversal of 665316006 is 600613566.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665316007) 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, 122496 + ... + 127811.

It is an arithmetic number, because the mean of its divisors is an integer number (83352564).

Almost surely, 2^665316006 is an apocalyptic number.

665316006 is an abundant number, since it is smaller than the sum of its proper divisors (668325018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665316006 is a wasteful number, since it uses less digits than its factorization.

665316006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250755.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 665316006 is about 25793.7202822703. The cubic root of 665316006 is about 872.9901104860.

The spelling of 665316006 in words is "six hundred sixty-five million, three hundred sixteen thousand, six".