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68445041 = 719151193
BaseRepresentation
bin1000001010001…
…10001101110001
311202210100221112
410011012031301
5120010220131
610443003105
71460526140
oct405061561
9152710845
1068445041
11356a9855
121ab09495
1311245b32
149139757
15602002b
hex4146371

68445041 has 8 divisors (see below), whose sum is σ = 78633984. Its totient is φ = 58358880.

The previous prime is 68445029. The next prime is 68445053. The reversal of 68445041 is 14054486.

It is an interprime number because it is at equal distance from previous prime (68445029) and next prime (68445053).

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 68445041 - 26 = 68444977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68444989 and 68445007.

It is not an unprimeable number, because it can be changed into a prime (68445061) 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, 24260 + ... + 26933.

It is an arithmetic number, because the mean of its divisors is an integer number (9829248).

Almost surely, 268445041 is an apocalyptic number.

It is an amenable number.

68445041 is a deficient number, since it is larger than the sum of its proper divisors (10188943).

68445041 is a wasteful number, since it uses less digits than its factorization.

68445041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51391.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 68445041 is about 8273.1518177778. The cubic root of 68445041 is about 409.0540177298.

The spelling of 68445041 in words is "sixty-eight million, four hundred forty-five thousand, forty-one".

Divisors: 1 7 191 1337 51193 358351 9777863 68445041