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68207349 = 3717191057
BaseRepresentation
bin1000001000011…
…00001011110101
311202100021220010
410010030023311
5114430113344
610433530433
71455516150
oct404141365
9152307803
1068207349
1135557211
121aa13a19
13111918a2
1490b6c97
155ec48b9
hex410c2f5

68207349 has 16 divisors (see below), whose sum is σ = 110049408. Its totient is φ = 36682752.

The previous prime is 68207339. The next prime is 68207353. The reversal of 68207349 is 94370286.

68207349 = T4411 + T4412 + ... + T4417.

It is not a de Polignac number, because 68207349 - 27 = 68207221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68207329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95172 + ... + 95885.

It is an arithmetic number, because the mean of its divisors is an integer number (6878088).

Almost surely, 268207349 is an apocalyptic number.

It is an amenable number.

68207349 is a deficient number, since it is larger than the sum of its proper divisors (41842059).

68207349 is a wasteful number, since it uses less digits than its factorization.

68207349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191084.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 68207349 is about 8258.7740615663. The cubic root of 68207349 is about 408.5799554550.

The spelling of 68207349 in words is "sixty-eight million, two hundred seven thousand, three hundred forty-nine".

Divisors: 1 3 7 17 21 51 119 357 191057 573171 1337399 3247969 4012197 9743907 22735783 68207349