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67868017 = 79695431
BaseRepresentation
bin1000000101110…
…01010101110001
311201201001102021
410002321111301
5114333234032
610422351441
71452603640
oct402712561
9151631367
1067868017
1135345278
121a88b581
13110a32b9
149029357
155e59097
hex40b9571

67868017 has 4 divisors (see below), whose sum is σ = 77563456. Its totient is φ = 58172580.

The previous prime is 67868011. The next prime is 67868023. The reversal of 67868017 is 71086876.

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 an interprime number because it is at equal distance from previous prime (67868011) and next prime (67868023).

It is a cyclic number.

It is not a de Polignac number, because 67868017 - 211 = 67865969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67868011) 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, 4847709 + ... + 4847722.

It is an arithmetic number, because the mean of its divisors is an integer number (19390864).

Almost surely, 267868017 is an apocalyptic number.

It is an amenable number.

67868017 is a deficient number, since it is larger than the sum of its proper divisors (9695439).

67868017 is an equidigital number, since it uses as much as digits as its factorization.

67868017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695438.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 67868017 is about 8238.2047194762. The cubic root of 67868017 is about 407.9012660774.

The spelling of 67868017 in words is "sixty-seven million, eight hundred sixty-eight thousand, seventeen".

Divisors: 1 7 9695431 67868017