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67168385 = 530794363
BaseRepresentation
bin1000000000011…
…10100010000001
311200101111200222
410000032202001
5114143342020
610355352425
71443631124
oct400164201
9150344628
1067168385
1134a07669
121a5b2715
1310bb9a0b
148cc63bb
155d6bb25
hex400e881

67168385 has 8 divisors (see below), whose sum is σ = 80646720. Its totient is φ = 53704944.

The previous prime is 67168369. The next prime is 67168391. The reversal of 67168385 is 58386176.

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 67168385 - 24 = 67168369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13214 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (10080840).

Almost surely, 267168385 is an apocalyptic number.

It is an amenable number.

67168385 is a deficient number, since it is larger than the sum of its proper divisors (13478335).

67168385 is a wasteful number, since it uses less digits than its factorization.

67168385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its digits is 241920, while the sum is 44.

The square root of 67168385 is about 8195.6320683642. The cubic root of 67168385 is about 406.4947760368.

The spelling of 67168385 in words is "sixty-seven million, one hundred sixty-eight thousand, three hundred eighty-five".

Divisors: 1 5 3079 4363 15395 21815 13433677 67168385