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108621 = 36149
BaseRepresentation
bin11010100001001101
312112000000
4122201031
511433441
62154513
7631452
oct324115
9175000
10108621
1174677
1252a39
133a596
142b829
15222b6
hex1a84d

108621 has 14 divisors (see below), whose sum is σ = 163950. Its totient is φ = 71928.

The previous prime is 108587. The next prime is 108631. The reversal of 108621 is 126801.

It can be written as a sum of positive squares in only one way, i.e., 72900 + 35721 = 270^2 + 189^2 .

It is not a de Polignac number, because 108621 - 26 = 108557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108594 and 108603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108631) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 655 + ... + 803.

2108621 is an apocalyptic number.

It is an amenable number.

108621 is a deficient number, since it is larger than the sum of its proper divisors (55329).

108621 is an frugal number, since it uses more digits than its factorization.

108621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 108621 is about 329.5770016248. The cubic root of 108621 is about 47.7131327314.

It can be divided in two parts, 108 and 621, that added together give a 6-th power (729 = 36).

The spelling of 108621 in words is "one hundred eight thousand, six hundred twenty-one".

Divisors: 1 3 9 27 81 149 243 447 729 1341 4023 12069 36207 108621