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68450 = 252372
BaseRepresentation
bin10000101101100010
310110220012
4100231202
54142300
61244522
7403364
oct205542
9113805
1068450
1147478
1233742
1325205
141ad34
1515435
hex10b62

68450 has 18 divisors (see below), whose sum is σ = 130851. Its totient is φ = 26640.

The previous prime is 68449. The next prime is 68473. The reversal of 68450 is 5486.

It can be written as a sum of positive squares in 5 ways, for example, as 54289 + 14161 = 233^2 + 119^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=185.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1832 + ... + 1868.

268450 is an apocalyptic number.

68450 is a deficient number, since it is larger than the sum of its proper divisors (62401).

68450 is a wasteful number, since it uses less digits than its factorization.

68450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 68450 is about 261.6295090390. The cubic root of 68450 is about 40.9063896458.

The spelling of 68450 in words is "sixty-eight thousand, four hundred fifty".

Divisors: 1 2 5 10 25 37 50 74 185 370 925 1369 1850 2738 6845 13690 34225 68450