Search a number
-
+
68085473 = 367185519
BaseRepresentation
bin1000000111011…
…10011011100001
311202010002201012
410003232123201
5114412213343
610431150305
71454500631
oct403563341
9152102635
1068085473
1135483695
121a975395
131114b281
1490846c1
155e9d718
hex40ee6e1

68085473 has 4 divisors (see below), whose sum is σ = 68271360. Its totient is φ = 67899588.

The previous prime is 68085449. The next prime is 68085499. The reversal of 68085473 is 37458086.

It is a happy number.

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 68085473 - 210 = 68084449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68085473.

It is not an unprimeable number, because it can be changed into a prime (68085403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92393 + ... + 93126.

It is an arithmetic number, because the mean of its divisors is an integer number (17067840).

Almost surely, 268085473 is an apocalyptic number.

It is an amenable number.

68085473 is a deficient number, since it is larger than the sum of its proper divisors (185887).

68085473 is a wasteful number, since it uses less digits than its factorization.

68085473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185886.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 68085473 is about 8251.3921855648. The cubic root of 68085473 is about 408.3364539351.

The spelling of 68085473 in words is "sixty-eight million, eighty-five thousand, four hundred seventy-three".

Divisors: 1 367 185519 68085473