669008666592 has 144 divisors (see below), whose sum is σ = 2302177000032. Its totient is φ = 179901480960.

The previous prime is 669008666561. The next prime is 669008666597. The reversal of 669008666592 is 295666800966.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669008666597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9726009 + ... + 9794552.

It is an arithmetic number, because the mean of its divisors is an integer number (15987340278).

Almost surely, 2^669008666592 is an apocalyptic number.

It is an amenable number.

669008666592 is an abundant number, since it is smaller than the sum of its proper divisors (1633168333440).

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

669008666592 is a wasteful number, since it uses less digits than its factorization.

669008666592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19520601 (or 19520590 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 669008666592 in words is "six hundred sixty-nine billion, eight million, six hundred sixty-six thousand, five hundred ninety-two".