73665565606 has 8 divisors (see below), whose sum is σ = 111897061920. Its totient is φ = 36366544968.

The previous prime is 73665565583. The next prime is 73665565607. The reversal of 73665565606 is 60656556637.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73665565607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233118721 + ... + 233119036.

It is an arithmetic number, because the mean of its divisors is an integer number (13987132740).

Almost surely, 2^73665565606 is an apocalyptic number.

73665565606 is a deficient number, since it is larger than the sum of its proper divisors (38231496314).

73665565606 is a wasteful number, since it uses less digits than its factorization.

73665565606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466237838.

The product of its (nonzero) digits is 20412000, while the sum is 55.

The spelling of 73665565606 in words is "seventy-three billion, six hundred sixty-five million, five hundred sixty-five thousand, six hundred six".