Search a number
-
+
68083045 = 517800977
BaseRepresentation
bin1000000111011…
…01110101100101
311202002222101021
410003231311211
5114412124140
610431131141
71454460562
oct403556545
9152088337
1068083045
1135481888
121a973ab1
131114a134
149083869
155e9cb4a
hex40edd65

68083045 has 8 divisors (see below), whose sum is σ = 86505624. Its totient is φ = 51262464.

The previous prime is 68083033. The next prime is 68083063. The reversal of 68083045 is 54038086.

It can be written as a sum of positive squares in 4 ways, for example, as 5846724 + 62236321 = 2418^2 + 7889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68083045 - 215 = 68050277 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 68083045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400404 + ... + 400573.

It is an arithmetic number, because the mean of its divisors is an integer number (10813203).

Almost surely, 268083045 is an apocalyptic number.

It is an amenable number.

68083045 is a deficient number, since it is larger than the sum of its proper divisors (18422579).

68083045 is a wasteful number, since it uses less digits than its factorization.

68083045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800999.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 68083045 is about 8251.2450575656. The cubic root of 68083045 is about 408.3315999741.

The spelling of 68083045 in words is "sixty-eight million, eighty-three thousand, forty-five".

Divisors: 1 5 17 85 800977 4004885 13616609 68083045