68611605 has 16 divisors (see below), whose sum is σ = 111284160. Its totient is φ = 36091008.

The previous prime is 68611597. The next prime is 68611607. The reversal of 68611605 is 50611686.

It is not a de Polignac number, because 68611605 - 2³ = 68611597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68611607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30235 + ... + 32424.

It is an arithmetic number, because the mean of its divisors is an integer number (6955260).

Almost surely, 2^68611605 is an apocalyptic number.

It is an amenable number.

68611605 is a deficient number, since it is larger than the sum of its proper divisors (42672555).

68611605 is a wasteful number, since it uses less digits than its factorization.

68611605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62740.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 68611605 is about 8283.2122392222. The cubic root of 68611605 is about 409.3855658753.

The spelling of 68611605 in words is "sixty-eight million, six hundred eleven thousand, six hundred five".