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68722983 = 3271090841
BaseRepresentation
bin1000001100010…
…10000100100111
311210022111012200
410012022010213
5120043113413
610452545543
71463064360
oct406120447
9153274180
1068722983
113587965a
121b0222b3
13113124b4
1491acb67
156077573
hex418a127

68722983 has 12 divisors (see below), whose sum is σ = 113447568. Its totient is φ = 39270240.

The previous prime is 68722967. The next prime is 68722991. The reversal of 68722983 is 38922786.

It is not a de Polignac number, because 68722983 - 24 = 68722967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68722903) 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, 545358 + ... + 545483.

It is an arithmetic number, because the mean of its divisors is an integer number (9453964).

Almost surely, 268722983 is an apocalyptic number.

68722983 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68722983 is a deficient number, since it is larger than the sum of its proper divisors (44724585).

68722983 is a wasteful number, since it uses less digits than its factorization.

68722983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090854 (or 1090851 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 68722983 is about 8289.9326294006. The cubic root of 68722983 is about 409.6069662022.

The spelling of 68722983 in words is "sixty-eight million, seven hundred twenty-two thousand, nine hundred eighty-three".

Divisors: 1 3 7 9 21 63 1090841 3272523 7635887 9817569 22907661 68722983