665433357606 has 12 divisors (see below), whose sum is σ = 1441772274852. Its totient is φ = 221811119196.

The previous prime is 665433357571. The next prime is 665433357619. The reversal of 665433357606 is 606753334566.

665433357606 is a `hidden beast` number, since 6 + 6 + 543 + 3 + 35 + 7 + 60 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18484259916 + ... + 18484259951.

It is an arithmetic number, because the mean of its divisors is an integer number (120147689571).

Almost surely, 2^665433357606 is an apocalyptic number.

665433357606 is an abundant number, since it is smaller than the sum of its proper divisors (776338917246).

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

665433357606 is a wasteful number, since it uses less digits than its factorization.

665433357606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36968519875 (or 36968519872 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 54.

The spelling of 665433357606 in words is "six hundred sixty-five billion, four hundred thirty-three million, three hundred fifty-seven thousand, six hundred six".