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68248969 = 1941791109
BaseRepresentation
bin1000001000101…
…10010110001001
311202102101222121
410010112112021
5114432431334
610434451241
71456051405
oct404262611
9152371877
1068248969
1135585508
121aa33b21
13111a7809
1490c8105
155ed1db4
hex4116589

68248969 has 16 divisors (see below), whose sum is σ = 74592000. Its totient is φ = 62225280.

The previous prime is 68248967. The next prime is 68249009. The reversal of 68248969 is 96984286.

It is a cyclic number.

It is not a de Polignac number, because 68248969 - 21 = 68248967 is a prime.

It is a super-2 number, since 2×682489692 = 9315843539125922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68248967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60987 + ... + 62095.

It is an arithmetic number, because the mean of its divisors is an integer number (4662000).

Almost surely, 268248969 is an apocalyptic number.

It is an amenable number.

68248969 is a deficient number, since it is larger than the sum of its proper divisors (6343031).

68248969 is a wasteful number, since it uses less digits than its factorization.

68248969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248.

The product of its digits is 1492992, while the sum is 52.

The square root of 68248969 is about 8261.2934217349. The cubic root of 68248969 is about 408.6630434719.

The spelling of 68248969 in words is "sixty-eight million, two hundred forty-eight thousand, nine hundred sixty-nine".

Divisors: 1 19 41 79 779 1109 1501 3239 21071 45469 61541 87611 863911 1664609 3592051 68248969