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103661 = 234507
BaseRepresentation
bin11001010011101101
312021012022
4121103231
511304121
62115525
7611135
oct312355
9167168
10103661
1170978
124bba5
133824c
1429ac5
1520aab
hex194ed

103661 has 4 divisors (see below), whose sum is σ = 108192. Its totient is φ = 99132.

The previous prime is 103657. The next prime is 103669. The reversal of 103661 is 166301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103661 - 22 = 103657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103669) 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, 2231 + ... + 2276.

It is an arithmetic number, because the mean of its divisors is an integer number (27048).

2103661 is an apocalyptic number.

It is an amenable number.

103661 is a deficient number, since it is larger than the sum of its proper divisors (4531).

103661 is an equidigital number, since it uses as much as digits as its factorization.

103661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 103661 is about 321.9642837335. The cubic root of 103661 is about 46.9755418241.

Adding to 103661 its reverse (166301), we get a palindrome (269962).

The spelling of 103661 in words is "one hundred three thousand, six hundred sixty-one".

Divisors: 1 23 4507 103661