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68380475 = 524675857
BaseRepresentation
bin1000001001101…
…10011100111011
311202200002101012
410010312130323
5120001133400
610441344135
71460136662
oct404663473
9152602335
1068380475
1135665299
121aa9804b
1311222627
14911ddd9
15600ad35
hex413673b

68380475 has 12 divisors (see below), whose sum is σ = 84987864. Its totient is φ = 54577920.

The previous prime is 68380457. The next prime is 68380489. The reversal of 68380475 is 57408386.

It is a happy number.

It is not a de Polignac number, because 68380475 - 212 = 68376379 is a prime.

It is a super-2 number, since 2×683804752 = 9351778722451250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8747 + ... + 14603.

It is an arithmetic number, because the mean of its divisors is an integer number (7082322).

Almost surely, 268380475 is an apocalyptic number.

68380475 is a deficient number, since it is larger than the sum of its proper divisors (16607389).

68380475 is a wasteful number, since it uses less digits than its factorization.

68380475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334 (or 6329 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 68380475 is about 8269.2487566888. The cubic root of 68380475 is about 408.9253534740.

The spelling of 68380475 in words is "sixty-eight million, three hundred eighty thousand, four hundred seventy-five".

Divisors: 1 5 25 467 2335 5857 11675 29285 146425 2735219 13676095 68380475