Search a number
-
+
68776969 = 233780819
BaseRepresentation
bin1000001100101…
…11010000001001
311210102020021011
410012113100021
5120101330334
610454043521
71463410642
oct406272011
9153366234
1068776969
1135906178
121b0495a1
1311330c41
1491c46c9
156088564
hex4197409

68776969 has 8 divisors (see below), whose sum is σ = 73707840. Its totient is φ = 64007856.

The previous prime is 68776963. The next prime is 68776973. The reversal of 68776969 is 96967786.

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 68776969 - 25 = 68776937 is a prime.

It is a super-2 number, since 2×687769692 = 9460542929653922, which contains 22 as substring.

It is a Duffinian number.

68776969 is a modest number, since divided by 6969 gives 6877 as remainder.

It is not an unprimeable number, because it can be changed into a prime (68776963) 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, 39559 + ... + 41260.

It is an arithmetic number, because the mean of its divisors is an integer number (9213480).

Almost surely, 268776969 is an apocalyptic number.

It is an amenable number.

68776969 is a deficient number, since it is larger than the sum of its proper divisors (4930871).

68776969 is a wasteful number, since it uses less digits than its factorization.

68776969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80879.

The product of its digits is 6858432, while the sum is 58.

The square root of 68776969 is about 8293.1881083212. The cubic root of 68776969 is about 409.7141950256.

The spelling of 68776969 in words is "sixty-eight million, seven hundred seventy-six thousand, nine hundred sixty-nine".

Divisors: 1 23 37 851 80819 1858837 2990303 68776969