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68748271 = 432576221
BaseRepresentation
bin1000001100100…
…00001111101111
311210100202220021
410012100033233
5120044421041
610453303011
71463231164
oct406201757
9153322807
1068748271
1135896659
121b034a67
1311320b67
1491b806b
15607ecd1
hex41903ef

68748271 has 8 divisors (see below), whose sum is σ = 70632144. Its totient is φ = 66877440.

The previous prime is 68748233. The next prime is 68748283. The reversal of 68748271 is 17284786.

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

It is a cyclic number.

It is not a de Polignac number, because 68748271 - 219 = 68223983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68748571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7941 + ... + 14161.

It is an arithmetic number, because the mean of its divisors is an integer number (8829018).

Almost surely, 268748271 is an apocalyptic number.

68748271 is a deficient number, since it is larger than the sum of its proper divisors (1883873).

68748271 is a wasteful number, since it uses less digits than its factorization.

68748271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521.

The product of its digits is 150528, while the sum is 43.

The square root of 68748271 is about 8291.4577126100. The cubic root of 68748271 is about 409.6572010740.

The spelling of 68748271 in words is "sixty-eight million, seven hundred forty-eight thousand, two hundred seventy-one".

Divisors: 1 43 257 6221 11051 267503 1598797 68748271