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68208275 = 522728331
BaseRepresentation
bin1000001000011…
…00011010010011
311202100100011102
410010030122103
5114430131100
610433535015
71455521642
oct404143223
9152310142
1068208275
1135557983
121aa1446b
1311192135
1490b7359
155ec4cd5
hex410c693

68208275 has 6 divisors (see below), whose sum is σ = 84578292. Its totient is φ = 54566600.

The previous prime is 68208253. The next prime is 68208289. The reversal of 68208275 is 57280286.

It is not a de Polignac number, because 68208275 - 212 = 68204179 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1364141 + ... + 1364190.

It is an arithmetic number, because the mean of its divisors is an integer number (14096382).

Almost surely, 268208275 is an apocalyptic number.

68208275 is a deficient number, since it is larger than the sum of its proper divisors (16370017).

68208275 is a wasteful number, since it uses less digits than its factorization.

68208275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728341 (or 2728336 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 68208275 is about 8258.8301229654. The cubic root of 68208275 is about 408.5818044411.

The spelling of 68208275 in words is "sixty-eight million, two hundred eight thousand, two hundred seventy-five".

Divisors: 1 5 25 2728331 13641655 68208275