68605153 has 4 divisors (see below), whose sum is σ = 68625088. Its totient is φ = 68585220.

The previous prime is 68605129. The next prime is 68605169. The reversal of 68605153 is 35150686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68605153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68605123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333 + ... + 12178.

It is an arithmetic number, because the mean of its divisors is an integer number (17156272).

Almost surely, 2^68605153 is an apocalyptic number.

It is an amenable number.

68605153 is a deficient number, since it is larger than the sum of its proper divisors (19935).

68605153 is a wasteful number, since it uses less digits than its factorization.

68605153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19934.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 68605153 is about 8282.8227676318. The cubic root of 68605153 is about 409.3727330683.

The spelling of 68605153 in words is "sixty-eight million, six hundred five thousand, one hundred fifty-three".