Search a number
-
+
68711012 = 2231354881
BaseRepresentation
bin1000001100001…
…11001001100100
311210021212210022
410012013021210
5120042223022
610452414312
71463014436
oct406071144
9153255708
1068711012
1135870667
121b017398
1311309c06
1491a8656
156073c42
hex4187264

68711012 has 12 divisors (see below), whose sum is σ = 120630636. Its totient is φ = 34245120.

The previous prime is 68711003. The next prime is 68711021. The reversal of 68711012 is 21011786.

It is an interprime number because it is at equal distance from previous prime (68711003) and next prime (68711021).

It can be written as a sum of positive squares in 2 ways, for example, as 1700416 + 67010596 = 1304^2 + 8186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26189 + ... + 28692.

It is an arithmetic number, because the mean of its divisors is an integer number (10052553).

Almost surely, 268711012 is an apocalyptic number.

It is an amenable number.

68711012 is a deficient number, since it is larger than the sum of its proper divisors (51919624).

68711012 is a wasteful number, since it uses less digits than its factorization.

68711012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55198 (or 55196 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 68711012 is about 8289.2105776123. The cubic root of 68711012 is about 409.5831813900.

Adding to 68711012 its reverse (21011786), we get a palindrome (89722798).

The spelling of 68711012 in words is "sixty-eight million, seven hundred eleven thousand, twelve".

Divisors: 1 2 4 313 626 1252 54881 109762 219524 17177753 34355506 68711012