665970036 has 48 divisors (see below), whose sum is σ = 1702088640. Its totient is φ = 201725440.

The previous prime is 665970031. The next prime is 665970043. The reversal of 665970036 is 630079566.

It is a self number, because there is not a number n which added to its sum of digits gives 665970036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665970031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50370 + ... + 62201.

It is an arithmetic number, because the mean of its divisors is an integer number (35460180).

Almost surely, 2^665970036 is an apocalyptic number.

It is an amenable number.

665970036 is an abundant number, since it is smaller than the sum of its proper divisors (1036118604).

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

665970036 is a wasteful number, since it uses less digits than its factorization.

665970036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112624 (or 112622 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 665970036 is about 25806.3952538901. The cubic root of 665970036 is about 873.2760772181.

The spelling of 665970036 in words is "six hundred sixty-five million, nine hundred seventy thousand, thirty-six".