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68605545 = 354573703
BaseRepresentation
bin1000001011011…
…01011001101001
311210002112010010
410011231121221
5120030334140
610450242133
71462065111
oct405553151
9153075103
1068605545
11357a93a8
121ab86349
13112a0bc8
14917c041
156052880
hex416d669

68605545 has 8 divisors (see below), whose sum is σ = 109768896. Its totient is φ = 36589616.

The previous prime is 68605543. The next prime is 68605567. The reversal of 68605545 is 54550686.

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

It is a cyclic number.

It is not a de Polignac number, because 68605545 - 21 = 68605543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68605543) 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 7 ways as a sum of consecutive naturals, for example, 2286837 + ... + 2286866.

It is an arithmetic number, because the mean of its divisors is an integer number (13721112).

Almost surely, 268605545 is an apocalyptic number.

It is an amenable number.

68605545 is a deficient number, since it is larger than the sum of its proper divisors (41163351).

68605545 is a wasteful number, since it uses less digits than its factorization.

68605545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573711.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 68605545 is about 8282.8464310284. The cubic root of 68605545 is about 409.3735127658.

The spelling of 68605545 in words is "sixty-eight million, six hundred five thousand, five hundred forty-five".

Divisors: 1 3 5 15 4573703 13721109 22868515 68605545