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68750867 = 647106261
BaseRepresentation
bin1000001100100…
…00111000010011
311210100220110102
410012100320103
5120100011432
610453323015
71463241563
oct406207023
9153326412
1068750867
11358985a9
121b03646b
13113220b3
1491b8da3
156080962
hex4190e13

68750867 has 4 divisors (see below), whose sum is σ = 68857776. Its totient is φ = 68643960.

The previous prime is 68750863. The next prime is 68750879. The reversal of 68750867 is 76805786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68750867 - 22 = 68750863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68750861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52484 + ... + 53777.

It is an arithmetic number, because the mean of its divisors is an integer number (17214444).

Almost surely, 268750867 is an apocalyptic number.

68750867 is a deficient number, since it is larger than the sum of its proper divisors (106909).

68750867 is a wasteful number, since it uses less digits than its factorization.

68750867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106908.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 68750867 is about 8291.6142577908. The cubic root of 68750867 is about 409.6623573574.

The spelling of 68750867 in words is "sixty-eight million, seven hundred fifty thousand, eight hundred sixty-seven".

Divisors: 1 647 106261 68750867