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68215741 = 1159891181
BaseRepresentation
bin1000001000011…
…10001110111101
311202100201101221
410010032032331
5114430400431
610434033341
71455552466
oct404161675
9152321357
1068215741
1135562550
121aa18851
1311195659
1490b9d6d
155ec7111
hex410e3bd

68215741 has 16 divisors (see below), whose sum is σ = 76593600. Its totient is φ = 60227200.

The previous prime is 68215729. The next prime is 68215783. The reversal of 68215741 is 14751286.

It is not a de Polignac number, because 68215741 - 25 = 68215709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68215697 and 68215706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68215711) 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 15 ways as a sum of consecutive naturals, for example, 57171 + ... + 58351.

It is an arithmetic number, because the mean of its divisors is an integer number (4787100).

Almost surely, 268215741 is an apocalyptic number.

It is an amenable number.

68215741 is a deficient number, since it is larger than the sum of its proper divisors (8377859).

68215741 is a wasteful number, since it uses less digits than its factorization.

68215741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 13440, while the sum is 34.

The square root of 68215741 is about 8259.2821116608. The cubic root of 68215741 is about 408.5967115300.

The spelling of 68215741 in words is "sixty-eight million, two hundred fifteen thousand, seven hundred forty-one".

Divisors: 1 11 59 89 649 979 1181 5251 12991 57761 69679 105109 766469 1156199 6201431 68215741