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68285613 = 3112069261
BaseRepresentation
bin1000001000111…
…11010010101101
311202111021020210
410010133102231
5114440114423
610435333033
71456263264
oct404372255
9152437223
1068285613
11355aaaa0
121aa51179
13111bb3b6
1490d75db
155edcb93
hex411f4ad

68285613 has 8 divisors (see below), whose sum is σ = 99324576. Its totient is φ = 41385200.

The previous prime is 68285611. The next prime is 68285621. The reversal of 68285613 is 31658286.

It is a happy number.

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 68285613 - 21 = 68285611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68285611) 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, 1034598 + ... + 1034663.

It is an arithmetic number, because the mean of its divisors is an integer number (12415572).

Almost surely, 268285613 is an apocalyptic number.

It is an amenable number.

68285613 is a deficient number, since it is larger than the sum of its proper divisors (31038963).

68285613 is a wasteful number, since it uses less digits than its factorization.

68285613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069275.

The product of its digits is 69120, while the sum is 39.

The square root of 68285613 is about 8263.5109366419. The cubic root of 68285613 is about 408.7361697010.

The spelling of 68285613 in words is "sixty-eight million, two hundred eighty-five thousand, six hundred thirteen".

Divisors: 1 3 11 33 2069261 6207783 22761871 68285613