Search a number
-
+
68871101 = 1340912953
BaseRepresentation
bin1000001101011…
…10001110111101
311210121000101112
410012232032331
5120112333401
610500051405
71464252245
oct406561675
9153530345
1068871101
113596a972
121b093b65
1311364a40
14920ab25
1560a63bb
hex41ae3bd

68871101 has 8 divisors (see below), whose sum is σ = 74355960. Its totient is φ = 63412992.

The previous prime is 68871071. The next prime is 68871139. The reversal of 68871101 is 10117886.

68871101 = 1892 + 1902 + ... + 5972.

It can be written as a sum of positive squares in 4 ways, for example, as 2839225 + 66031876 = 1685^2 + 8126^2 .

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 68871101 - 214 = 68854717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68871151) 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, 1160 + ... + 11793.

It is an arithmetic number, because the mean of its divisors is an integer number (9294495).

Almost surely, 268871101 is an apocalyptic number.

It is an amenable number.

68871101 is a deficient number, since it is larger than the sum of its proper divisors (5484859).

68871101 is a wasteful number, since it uses less digits than its factorization.

68871101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13375.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 68871101 is about 8298.8614279309. The cubic root of 68871101 is about 409.9010290557.

Adding to 68871101 its reverse (10117886), we get a palindrome (78988987).

The spelling of 68871101 in words is "sixty-eight million, eight hundred seventy-one thousand, one hundred one".

Divisors: 1 13 409 5317 12953 168389 5297777 68871101