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68682808 = 2323336847
BaseRepresentation
bin1000001100000…
…00010000111000
311210020110002201
410012000100320
5120040322213
610452035544
71462536265
oct406002070
9153213081
1068682808
1135851457
121b002bb4
13112ca11c
14919c26c
15606a6dd
hex4180438

68682808 has 16 divisors (see below), whose sum is σ = 129336480. Its totient is φ = 34193088.

The previous prime is 68682799. The next prime is 68682811. The reversal of 68682808 is 80828686.

It is a super-2 number, since 2×686828082 = 9434656229529728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16560 + ... + 20287.

It is an arithmetic number, because the mean of its divisors is an integer number (8083530).

Almost surely, 268682808 is an apocalyptic number.

It is an amenable number.

68682808 is a deficient number, since it is larger than the sum of its proper divisors (60653672).

68682808 is a wasteful number, since it uses less digits than its factorization.

68682808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37086 (or 37082 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 68682808 is about 8287.5091553494. The cubic root of 68682808 is about 409.5271328050.

The spelling of 68682808 in words is "sixty-eight million, six hundred eighty-two thousand, eight hundred eight".

Divisors: 1 2 4 8 233 466 932 1864 36847 73694 147388 294776 8585351 17170702 34341404 68682808