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BaseRepresentation
bin11001010111100100110001
3110111212022021
4121113210301
53200301121
6354311441
7110345140
oct31274461
913455267
106650161
113832401
122288581
1314bac0b
14c51757
158b5641
hex657931

6650161 has 4 divisors (see below), whose sum is σ = 7600192. Its totient is φ = 5700132.

The previous prime is 6650153. The next prime is 6650207. The reversal of 6650161 is 1610566.

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 6650161 - 23 = 6650153 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650131) 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, 475005 + ... + 475018.

It is an arithmetic number, because the mean of its divisors is an integer number (1900048).

Almost surely, 26650161 is an apocalyptic number.

It is an amenable number.

6650161 is a deficient number, since it is larger than the sum of its proper divisors (950031).

6650161 is an equidigital number, since it uses as much as digits as its factorization.

6650161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950030.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 6650161 is about 2578.7906080176. The cubic root of 6650161 is about 188.0517531429.

Adding to 6650161 its product of nonzero digits (1080), we get a square (6651241 = 25792).

The spelling of 6650161 in words is "six million, six hundred fifty thousand, one hundred sixty-one".

Divisors: 1 7 950023 6650161