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68763361 = 290323687
BaseRepresentation
bin1000001100100…
…11111011100001
311210101112121011
410012103323201
5120100411421
610453500521
71463323162
oct406237341
9153345534
1068763361
11358a6a27
121b041741
13113279a4
1491bd769
1560844e1
hex4193ee1

68763361 has 4 divisors (see below), whose sum is σ = 68789952. Its totient is φ = 68736772.

The previous prime is 68763349. The next prime is 68763367. The reversal of 68763361 is 16336786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68763361 - 215 = 68730593 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68763367) 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 3 ways as a sum of consecutive naturals, for example, 8941 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (17197488).

Almost surely, 268763361 is an apocalyptic number.

It is an amenable number.

68763361 is a deficient number, since it is larger than the sum of its proper divisors (26591).

68763361 is a wasteful number, since it uses less digits than its factorization.

68763361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26590.

The product of its digits is 108864, while the sum is 40.

The square root of 68763361 is about 8292.3676353621. The cubic root of 68763361 is about 409.6871716456.

The spelling of 68763361 in words is "sixty-eight million, seven hundred sixty-three thousand, three hundred sixty-one".

Divisors: 1 2903 23687 68763361