68604655565 has 8 divisors (see below), whose sum is σ = 82446126048. Its totient is φ = 54803364880.

The previous prime is 68604655549. The next prime is 68604655573. The reversal of 68604655565 is 56555640686.

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

It is not a de Polignac number, because 68604655565 - 2⁴ = 68604655549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68604655565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10041191 + ... + 10048020.

It is an arithmetic number, because the mean of its divisors is an integer number (10305765756).

Almost surely, 2^68604655565 is an apocalyptic number.

It is an amenable number.

68604655565 is a deficient number, since it is larger than the sum of its proper divisors (13841470483).

68604655565 is a wasteful number, since it uses less digits than its factorization.

68604655565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20089899.

The product of its (nonzero) digits is 25920000, while the sum is 56.

The spelling of 68604655565 in words is "sixty-eight billion, six hundred four million, six hundred fifty-five thousand, five hundred sixty-five".