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65830 = 2529227
BaseRepresentation
bin10000000100100110
310100022011
4100010212
54101310
61224434
7362632
oct200446
9110264
1065830
1145506
123211a
1323c6b
1419dc2
151478a
hex10126

65830 has 16 divisors (see below), whose sum is σ = 123120. Its totient is φ = 25312.

The previous prime is 65827. The next prime is 65831. The reversal of 65830 is 3856.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (7695).

265830 is an apocalyptic number.

65830 is a deficient number, since it is larger than the sum of its proper divisors (57290).

65830 is a wasteful number, since it uses less digits than its factorization.

65830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 65830 is about 256.5735761921. The cubic root of 65830 is about 40.3776728574.

It can be divided in two parts, 6 and 5830, that multiplied together give a triangular number (34980 = T264).

The spelling of 65830 in words is "sixty-five thousand, eight hundred thirty".

Divisors: 1 2 5 10 29 58 145 227 290 454 1135 2270 6583 13166 32915 65830