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68291067 = 3131751053
BaseRepresentation
bin1000001001000…
…00100111111011
311202111112201210
410010200213323
5114440303232
610435414203
71456315215
oct404404773
9152445653
1068291067
11356040a9
121aa54363
13111c0a20
1490d95b5
155ede5cc
hex41209fb

68291067 has 8 divisors (see below), whose sum is σ = 98059024. Its totient is φ = 42025248.

The previous prime is 68291053. The next prime is 68291077. The reversal of 68291067 is 76019286.

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

It is not a de Polignac number, because 68291067 - 24 = 68291051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1751053 = 68291067 / (6 + 8 + 2 + 9 + 1 + 0 + 6 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68291077) 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, 875488 + ... + 875565.

It is an arithmetic number, because the mean of its divisors is an integer number (12257378).

Almost surely, 268291067 is an apocalyptic number.

68291067 is a deficient number, since it is larger than the sum of its proper divisors (29767957).

68291067 is a wasteful number, since it uses less digits than its factorization.

68291067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751069.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 68291067 is about 8263.8409350616. The cubic root of 68291067 is about 408.7470513867.

The spelling of 68291067 in words is "sixty-eight million, two hundred ninety-one thousand, sixty-seven".

Divisors: 1 3 13 39 1751053 5253159 22763689 68291067