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67108969 = 1919917749
BaseRepresentation
bin1000000000000…
…00000001101001
311200021111012101
410000000001221
5114134441334
610354213401
71443262654
oct400000151
9150244171
1067108969
1134976a64
121a584261
1310b98965
148cac89b
155d59214
hex4000069

67108969 has 8 divisors (see below), whose sum is σ = 71000000. Its totient is φ = 63253872.

The previous prime is 67108961. The next prime is 67108981. The reversal of 67108969 is 96980176.

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 67108969 - 23 = 67108961 is a prime.

It is a super-2 number, since 2×671089692 = 9007227440485922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67108961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5094 + ... + 12655.

It is an arithmetic number, because the mean of its divisors is an integer number (8875000).

Almost surely, 267108969 is an apocalyptic number.

It is an amenable number.

67108969 is a deficient number, since it is larger than the sum of its proper divisors (3891031).

67108969 is a wasteful number, since it uses less digits than its factorization.

67108969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17967.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 67108969 is about 8192.0064086889. The cubic root of 67108969 is about 406.3748812447.

The spelling of 67108969 in words is "sixty-seven million, one hundred eight thousand, nine hundred sixty-nine".

Divisors: 1 19 199 3781 17749 337231 3532051 67108969