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68253837 = 344950671
BaseRepresentation
bin1000001000101…
…11100010001101
311202102122122220
410010113202031
5114433110322
610434525553
71456101531
oct404274215
9152378586
1068253837
1135589133
121aa368b9
13111a9ab2
1490c9bc1
155ed355c
hex411788d

68253837 has 8 divisors (see below), whose sum is σ = 91209600. Its totient is φ = 45400320.

The previous prime is 68253797. The next prime is 68253841. The reversal of 68253837 is 73835286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68253837 - 210 = 68252813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68251837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23989 + ... + 26682.

It is an arithmetic number, because the mean of its divisors is an integer number (11401200).

Almost surely, 268253837 is an apocalyptic number.

It is an amenable number.

68253837 is a deficient number, since it is larger than the sum of its proper divisors (22955763).

68253837 is a wasteful number, since it uses less digits than its factorization.

68253837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51123.

The product of its digits is 241920, while the sum is 42.

The square root of 68253837 is about 8261.5880434696. The cubic root of 68253837 is about 408.6727594887.

The spelling of 68253837 in words is "sixty-eight million, two hundred fifty-three thousand, eight hundred thirty-seven".

Divisors: 1 3 449 1347 50671 152013 22751279 68253837