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106905 = 357127
BaseRepresentation
bin11010000110011001
312102122110
4122012121
511410110
62142533
7623451
oct320631
9172573
10106905
1173357
1251a49
1339876
142ad61
1521a20
hex1a199

106905 has 8 divisors (see below), whose sum is σ = 171072. Its totient is φ = 57008.

The previous prime is 106903. The next prime is 106907. The reversal of 106905 is 509601.

It is an interprime number because it is at equal distance from previous prime (106903) and next prime (106907).

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

It is a cyclic number.

It is not a de Polignac number, because 106905 - 21 = 106903 is a prime.

It is a super-2 number, since 2×1069052 = 22857358050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3549 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (21384).

2106905 is an apocalyptic number.

106905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

106905 is a deficient number, since it is larger than the sum of its proper divisors (64167).

106905 is an equidigital number, since it uses as much as digits as its factorization.

106905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 106905 is about 326.9633006929. The cubic root of 106905 is about 47.4605397116.

The spelling of 106905 in words is "one hundred six thousand, nine hundred five".

Divisors: 1 3 5 15 7127 21381 35635 106905