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68455307 = 679911031
BaseRepresentation
bin1000001010010…
…00101110001011
311202210220000202
410011020232023
5120011032212
610443122415
71460601104
oct405105613
9152726022
1068455307
1135706538
121ab1340b
131124a6cb
14913d3ab
1560230c2
hex4148b8b

68455307 has 8 divisors (see below), whose sum is σ = 69614592. Its totient is φ = 67300200.

The previous prime is 68455301. The next prime is 68455313. The reversal of 68455307 is 70355486.

It is an interprime number because it is at equal distance from previous prime (68455301) and next prime (68455313).

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 68455307 - 216 = 68389771 is a prime.

It is a super-2 number, since 2×684553072 = 9372258112928498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68455301) 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 7 ways as a sum of consecutive naturals, for example, 65882 + ... + 66912.

It is an arithmetic number, because the mean of its divisors is an integer number (8701824).

Almost surely, 268455307 is an apocalyptic number.

68455307 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

68455307 is a deficient number, since it is larger than the sum of its proper divisors (1159285).

68455307 is a wasteful number, since it uses less digits than its factorization.

68455307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 68455307 is about 8273.7722352020. The cubic root of 68455307 is about 409.0744679019.

The spelling of 68455307 in words is "sixty-eight million, four hundred fifty-five thousand, three hundred seven".

Divisors: 1 67 991 1031 66397 69077 1021721 68455307