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68077241 = 1572331861
BaseRepresentation
bin1000000111011…
…00011010111001
311202002200102022
410003230122321
5114411432431
610431044225
71454434631
oct403543271
9152080368
1068077241
1135478491
121a970675
13111475bb
1490816c1
155e9b07b
hex40ec6b9

68077241 has 8 divisors (see below), whose sum is σ = 68841864. Its totient is φ = 67317120.

The previous prime is 68077211. The next prime is 68077277. The reversal of 68077241 is 14277086.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4141225 + 63936016 = 2035^2 + 7996^2 .

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 68077241 - 226 = 968377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68077201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35651 + ... + 37511.

It is an arithmetic number, because the mean of its divisors is an integer number (8605233).

Almost surely, 268077241 is an apocalyptic number.

It is an amenable number.

68077241 is a deficient number, since it is larger than the sum of its proper divisors (764623).

68077241 is a wasteful number, since it uses less digits than its factorization.

68077241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 68077241 is about 8250.8933455717. The cubic root of 68077241 is about 408.3199963805.

The spelling of 68077241 in words is "sixty-eight million, seventy-seven thousand, two hundred forty-one".

Divisors: 1 157 233 1861 36581 292177 433613 68077241