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201966 = 2341821
BaseRepresentation
bin110001010011101110
3101021001020
4301103232
522430331
64155010
71500552
oct612356
9337036
10201966
11128816
1298a66
1370c0b
1453862
153ec96
hex314ee

201966 has 16 divisors (see below), whose sum is σ = 414288. Its totient is φ = 65600.

The previous prime is 201961. The next prime is 201973. The reversal of 201966 is 669102.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201961) 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, 165 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (25893).

2201966 is an apocalyptic number.

201966 is an abundant number, since it is smaller than the sum of its proper divisors (212322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201966 is a wasteful number, since it uses less digits than its factorization.

201966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 201966 is about 449.4062749896. The cubic root of 201966 is about 58.6713509230.

It can be divided in two parts, 20196 and 6, that added together give a palindrome (20202).

The spelling of 201966 in words is "two hundred one thousand, nine hundred sixty-six".

Divisors: 1 2 3 6 41 82 123 246 821 1642 2463 4926 33661 67322 100983 201966