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68660484 = 22317336571
BaseRepresentation
bin1000001011110…
…10110100000100
311210012022110220
410011322310010
5120034113414
610451344340
71462414224
oct405726404
9153168426
1068660484
1135836702
121abb20b0
13112bcc09
149194084
156063ca9
hex417ad04

68660484 has 24 divisors (see below), whose sum is σ = 169632288. Its totient is φ = 21540480.

The previous prime is 68660477. The next prime is 68660491. The reversal of 68660484 is 48406686.

It is an interprime number because it is at equal distance from previous prime (68660477) and next prime (68660491).

It is a super-2 number, since 2×686604842 = 9428524126228512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168082 + ... + 168489.

It is an arithmetic number, because the mean of its divisors is an integer number (7068012).

Almost surely, 268660484 is an apocalyptic number.

It is an amenable number.

68660484 is an abundant number, since it is smaller than the sum of its proper divisors (100971804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68660484 is a wasteful number, since it uses less digits than its factorization.

68660484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336595 (or 336593 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 68660484 is about 8286.1621997159. The cubic root of 68660484 is about 409.4827584088.

The spelling of 68660484 in words is "sixty-eight million, six hundred sixty thousand, four hundred eighty-four".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 336571 673142 1009713 1346284 2019426 4038852 5721707 11443414 17165121 22886828 34330242 68660484