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68496771 = 3715121601
BaseRepresentation
bin1000001010100…
…10110110000011
311202212222220110
410011102312003
5120013344041
610444042403
71461133020
oct405226603
9152788813
1068496771
1135734702
121ab33403
1311263545
149150547
156030516
hex4152d83

68496771 has 16 divisors (see below), whose sum is σ = 105072128. Its totient is φ = 38880000.

The previous prime is 68496707. The next prime is 68496781. The reversal of 68496771 is 17769486.

It is not a de Polignac number, because 68496771 - 26 = 68496707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68496771.

It is not an unprimeable number, because it can be changed into a prime (68496781) 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 15 ways as a sum of consecutive naturals, for example, 7630 + ... + 13971.

It is an arithmetic number, because the mean of its divisors is an integer number (6567008).

Almost surely, 268496771 is an apocalyptic number.

68496771 is a deficient number, since it is larger than the sum of its proper divisors (36575357).

68496771 is a wasteful number, since it uses less digits than its factorization.

68496771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21762.

The product of its digits is 508032, while the sum is 48.

The square root of 68496771 is about 8276.2776053006. The cubic root of 68496771 is about 409.1570446028.

The spelling of 68496771 in words is "sixty-eight million, four hundred ninety-six thousand, seven hundred seventy-one".

Divisors: 1 3 7 21 151 453 1057 3171 21601 64803 151207 453621 3261751 9785253 22832257 68496771