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68004369 = 3217444473
BaseRepresentation
bin1000000110110…
…10101000010001
311201221222110100
410003122220101
5114402114434
610425323013
71454012316
oct403325021
9151858410
1068004369
1135428764
121a936469
1311120394
149062d0d
155e84699
hex40daa11

68004369 has 12 divisors (see below), whose sum is σ = 104006916. Its totient is φ = 42669312.

The previous prime is 68004367. The next prime is 68004379. The reversal of 68004369 is 96340086.

It can be written as a sum of positive squares in 2 ways, for example, as 23648769 + 44355600 = 4863^2 + 6660^2 .

It is not a de Polignac number, because 68004369 - 21 = 68004367 is a prime.

It is a super-2 number, since 2×680043692 = 9249188406176322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68004361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222084 + ... + 222389.

It is an arithmetic number, because the mean of its divisors is an integer number (8667243).

Almost surely, 268004369 is an apocalyptic number.

It is an amenable number.

68004369 is a deficient number, since it is larger than the sum of its proper divisors (36002547).

68004369 is a wasteful number, since it uses less digits than its factorization.

68004369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444496 (or 444493 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 68004369 is about 8246.4761565168. The cubic root of 68004369 is about 408.1742515492.

The spelling of 68004369 in words is "sixty-eight million, four thousand, three hundred sixty-nine".

Divisors: 1 3 9 17 51 153 444473 1333419 4000257 7556041 22668123 68004369