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68051045 = 5311273457
BaseRepresentation
bin1000000111001…
…10000001100101
311202001100111002
410003212001211
5114410113140
610430323045
71454265356
oct403460145
9152040432
1068051045
113545a837
121a959485
13111386ba
149075d2d
155e93415
hex40e6065

68051045 has 16 divisors (see below), whose sum is σ = 84983808. Its totient is φ = 52254720.

The previous prime is 68051041. The next prime is 68051063. The reversal of 68051045 is 54015086.

It is a happy number.

It is not a de Polignac number, because 68051045 - 22 = 68051041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68050999 and 68051017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68051041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17957 + ... + 21413.

It is an arithmetic number, because the mean of its divisors is an integer number (5311488).

Almost surely, 268051045 is an apocalyptic number.

It is an amenable number.

68051045 is a deficient number, since it is larger than the sum of its proper divisors (16932763).

68051045 is a wasteful number, since it uses less digits than its factorization.

68051045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 68051045 is about 8249.3057283628. The cubic root of 68051045 is about 408.2676160611.

The spelling of 68051045 in words is "sixty-eight million, fifty-one thousand, forty-five".

Divisors: 1 5 31 127 155 635 3457 3937 17285 19685 107167 439039 535835 2195195 13610209 68051045