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68415 = 354561
BaseRepresentation
bin10000101100111111
310110211220
4100230333
54142130
61244423
7403314
oct205477
9113756
1068415
1147446
1233713
13251a9
141ad0b
1515410
hex10b3f

68415 has 8 divisors (see below), whose sum is σ = 109488. Its totient is φ = 36480.

The previous prime is 68399. The next prime is 68437. The reversal of 68415 is 51486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68415 - 24 = 68399 is a prime.

It is a super-2 number, since 2×684152 = 9361224450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2266 + ... + 2295.

It is an arithmetic number, because the mean of its divisors is an integer number (13686).

268415 is an apocalyptic number.

68415 is a deficient number, since it is larger than the sum of its proper divisors (41073).

68415 is a wasteful number, since it uses less digits than its factorization.

68415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569.

The product of its digits is 960, while the sum is 24.

The square root of 68415 is about 261.5626120071. The cubic root of 68415 is about 40.8994163430.

The spelling of 68415 in words is "sixty-eight thousand, four hundred fifteen".

Divisors: 1 3 5 15 4561 13683 22805 68415