Search a number
-
+
68214811 = 7428411
BaseRepresentation
bin1000001000011…
…10000000011011
311202100200010111
410010032000123
5114430333221
610434025151
71455550000
oct404160033
9152320114
1068214811
1135561885
121aa181b7
13111950c2
1490b98a7
155ec6be1
hex410e01b

68214811 has 10 divisors (see below), whose sum is σ = 79582012. Its totient is φ = 58467780.

The previous prime is 68214793. The next prime is 68214821. The reversal of 68214811 is 11841286.

It is not a de Polignac number, because 68214811 - 29 = 68214299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68214821) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11805 + ... + 16606.

Almost surely, 268214811 is an apocalyptic number.

68214811 is a deficient number, since it is larger than the sum of its proper divisors (11367201).

68214811 is an frugal number, since it uses more digits than its factorization.

68214811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28439 (or 28418 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 68214811 is about 8259.2258111763. The cubic root of 68214811 is about 408.5948546924.

The spelling of 68214811 in words is "sixty-eight million, two hundred fourteen thousand, eight hundred eleven".

Divisors: 1 7 49 343 2401 28411 198877 1392139 9744973 68214811