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68703583 = 135284891
BaseRepresentation
bin1000001100001…
…01010101011111
311210021111121011
410012011111133
5120042003313
610452320051
71462653664
oct406052537
9153244534
1068703583
1135866023
121b013027
1311306710
1491a5a6b
15607193d
hex418555f

68703583 has 4 divisors (see below), whose sum is σ = 73988488. Its totient is φ = 63418680.

The previous prime is 68703559. The next prime is 68703587. The reversal of 68703583 is 38530786.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68703583 - 29 = 68703071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68703587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642433 + ... + 2642458.

It is an arithmetic number, because the mean of its divisors is an integer number (18497122).

Almost surely, 268703583 is an apocalyptic number.

68703583 is a deficient number, since it is larger than the sum of its proper divisors (5284905).

68703583 is a wasteful number, since it uses less digits than its factorization.

68703583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284904.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 68703583 is about 8288.7624528635. The cubic root of 68703583 is about 409.5684195489.

The spelling of 68703583 in words is "sixty-eight million, seven hundred three thousand, five hundred eighty-three".

Divisors: 1 13 5284891 68703583