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68434061 = 1714927017
BaseRepresentation
bin1000001010000…
…11100010001101
311202202210212212
410011003202031
5120004342221
610442440205
71460452133
oct405034215
9152683785
1068434061
11356a1583
121ab03065
1311240b37
149135753
15601bb5b
hex414388d

68434061 has 8 divisors (see below), whose sum is σ = 72948600. Its totient is φ = 63973888.

The previous prime is 68434049. The next prime is 68434087. The reversal of 68434061 is 16043486.

It can be written as a sum of positive squares in 4 ways, for example, as 24940036 + 43494025 = 4994^2 + 6595^2 .

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 68434061 - 210 = 68433037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68434031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10976 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (9118575).

Almost surely, 268434061 is an apocalyptic number.

It is an amenable number.

68434061 is a deficient number, since it is larger than the sum of its proper divisors (4514539).

68434061 is a wasteful number, since it uses less digits than its factorization.

68434061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27183.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 68434061 is about 8272.4881988432. The cubic root of 68434061 is about 409.0321429855.

The spelling of 68434061 in words is "sixty-eight million, four hundred thirty-four thousand, sixty-one".

Divisors: 1 17 149 2533 27017 459289 4025533 68434061