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68620125 = 353726141
BaseRepresentation
bin1000001011100…
…00111101011101
311210010021010010
410011300331131
5120031321000
610450433433
71462155450
oct405607535
9153107103
1068620125
1135809352
121ab92879
13112a7732
149183497
156056d50
hex4170f5d

68620125 has 32 divisors (see below), whose sum is σ = 130500864. Its totient is φ = 31368000.

The previous prime is 68620121. The next prime is 68620159. The reversal of 68620125 is 52102686.

It is not a de Polignac number, because 68620125 - 22 = 68620121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68620092 and 68620101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68620121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10446 + ... + 15695.

It is an arithmetic number, because the mean of its divisors is an integer number (4078152).

Almost surely, 268620125 is an apocalyptic number.

It is an amenable number.

68620125 is a deficient number, since it is larger than the sum of its proper divisors (61880739).

68620125 is a wasteful number, since it uses less digits than its factorization.

68620125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26166 (or 26156 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 68620125 is about 8283.7265164900. The cubic root of 68620125 is about 409.4025106310.

The spelling of 68620125 in words is "sixty-eight million, six hundred twenty thousand, one hundred twenty-five".

Divisors: 1 3 5 7 15 21 25 35 75 105 125 175 375 525 875 2625 26141 78423 130705 182987 392115 548961 653525 914935 1960575 2744805 3267625 4574675 9802875 13724025 22873375 68620125