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68307097 = 156743591
BaseRepresentation
bin1000001001001…
…00100010011001
311202112100201111
410010210202121
5114441311342
610440020321
71456413025
oct404444231
9152470644
1068307097
1135615151
121aa616a1
13111c8101
149101385
155ee4217
hex4124899

68307097 has 4 divisors (see below), whose sum is σ = 68352256. Its totient is φ = 68261940.

The previous prime is 68307061. The next prime is 68307119. The reversal of 68307097 is 79070386.

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 not a de Polignac number, because 68307097 - 219 = 67782809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68307397) 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, 20229 + ... + 23362.

It is an arithmetic number, because the mean of its divisors is an integer number (17088064).

Almost surely, 268307097 is an apocalyptic number.

It is an amenable number.

68307097 is a deficient number, since it is larger than the sum of its proper divisors (45159).

68307097 is a wasteful number, since it uses less digits than its factorization.

68307097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45158.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 68307097 is about 8264.8107661337. The cubic root of 68307097 is about 408.7790306919.

The spelling of 68307097 in words is "sixty-eight million, three hundred seven thousand, ninety-seven".

Divisors: 1 1567 43591 68307097