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68568357 = 31113159833
BaseRepresentation
bin1000001011001…
…00010100100101
311210000122002210
410011210110211
5120023141412
610445354033
71461551514
oct405442445
9153018083
1068568357
1135783470
121ab68919
1311289cc0
14916c67b
15604683c
hex4164525

68568357 has 16 divisors (see below), whose sum is σ = 107408448. Its totient is φ = 38359680.

The previous prime is 68568349. The next prime is 68568391. The reversal of 68568357 is 75386586.

It is not a de Polignac number, because 68568357 - 23 = 68568349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68568257) 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, 79488 + ... + 80345.

It is an arithmetic number, because the mean of its divisors is an integer number (6713028).

Almost surely, 268568357 is an apocalyptic number.

It is an amenable number.

68568357 is a deficient number, since it is larger than the sum of its proper divisors (38840091).

68568357 is a wasteful number, since it uses less digits than its factorization.

68568357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159860.

The product of its digits is 1209600, while the sum is 48.

The square root of 68568357 is about 8280.6012462864. The cubic root of 68568357 is about 409.2995317014.

The spelling of 68568357 in words is "sixty-eight million, five hundred sixty-eight thousand, three hundred fifty-seven".

Divisors: 1 3 11 13 33 39 143 429 159833 479499 1758163 2077829 5274489 6233487 22856119 68568357