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665030 = 2573911
BaseRepresentation
bin10100010010111000110
31020210020202
42202113012
5132240110
622130502
75436602
oct2422706
91223222
10665030
11414713
12280a32
131a3912
14134502
15d20a5
hexa25c6

665030 has 16 divisors (see below), whose sum is σ = 1214784. Its totient is φ = 262080.

The previous prime is 665029. The next prime is 665039. The reversal of 665030 is 30566.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664993 and 665011.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 665030.

It is not an unprimeable number, because it can be changed into a prime (665039) 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, 275 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (75924).

2665030 is an apocalyptic number.

665030 is a deficient number, since it is larger than the sum of its proper divisors (549754).

665030 is a wasteful number, since it uses less digits than its factorization.

665030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 665030 is about 815.4937154877. The cubic root of 665030 is about 87.2864998913.

Adding to 665030 its reverse (30566), we get a palindrome (695596).

The spelling of 665030 in words is "six hundred sixty-five thousand, thirty".

Divisors: 1 2 5 10 73 146 365 730 911 1822 4555 9110 66503 133006 332515 665030