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106615 = 521323
BaseRepresentation
bin11010000001110111
312102020201
4122001313
511402430
62141331
7622555
oct320167
9172221
10106615
1173113
1251847
13396b2
142abd5
15218ca
hex1a077

106615 has 4 divisors (see below), whose sum is σ = 127944. Its totient is φ = 85288.

The previous prime is 106591. The next prime is 106619. The reversal of 106615 is 516601.

It can be divided in two parts, 1066 and 15, that added together give a triangular number (1081 = T46).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 516601 = 3591439.

It is a cyclic number.

It is not a de Polignac number, because 106615 - 27 = 106487 is a prime.

It is a super-2 number, since 2×1066152 = 22733516450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106592 and 106601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10657 + ... + 10666.

It is an arithmetic number, because the mean of its divisors is an integer number (31986).

2106615 is an apocalyptic number.

106615 is a deficient number, since it is larger than the sum of its proper divisors (21329).

106615 is an equidigital number, since it uses as much as digits as its factorization.

106615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21328.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 106615 is about 326.5195246842. The cubic root of 106615 is about 47.4175856224.

The spelling of 106615 in words is "one hundred six thousand, six hundred fifteen".

Divisors: 1 5 21323 106615