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68053311 = 334335821
BaseRepresentation
bin1000000111001…
…10100100111111
311202001110121000
410003212210333
5114410201221
610430341343
71454305104
oct403464477
9152043530
1068053311
1135461507
121a95a853
1311139741
149076aab
155e93e26
hex40e693f

68053311 has 16 divisors (see below), whose sum is σ = 101069920. Its totient is φ = 45256320.

The previous prime is 68053289. The next prime is 68053313. The reversal of 68053311 is 11335086.

It is not a de Polignac number, because 68053311 - 29 = 68052799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68053313) 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, 8781 + ... + 14601.

It is an arithmetic number, because the mean of its divisors is an integer number (6316870).

Almost surely, 268053311 is an apocalyptic number.

68053311 is a deficient number, since it is larger than the sum of its proper divisors (33016609).

68053311 is a wasteful number, since it uses less digits than its factorization.

68053311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263 (or 6257 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 68053311 is about 8249.4430721110. The cubic root of 68053311 is about 408.2721475817.

Adding to 68053311 its reverse (11335086), we get a palindrome (79388397).

The spelling of 68053311 in words is "sixty-eight million, fifty-three thousand, three hundred eleven".

Divisors: 1 3 9 27 433 1299 3897 5821 11691 17463 52389 157167 2520493 7561479 22684437 68053311