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68179625 = 53545437
BaseRepresentation
bin1000001000001…
…01011010101001
311202021212212022
410010011122221
5114423222000
610433154225
71455342263
oct404053251
9152255768
1068179625
11355383a8
121a9bb975
1311182097
1490aab33
155ebb585
hex41056a9

68179625 has 8 divisors (see below), whose sum is σ = 85088328. Its totient is φ = 54543600.

The previous prime is 68179621. The next prime is 68179637. The reversal of 68179625 is 52697186.

It can be written as a sum of positive squares in 4 ways, for example, as 18800896 + 49378729 = 4336^2 + 7027^2 .

It is not a de Polignac number, because 68179625 - 22 = 68179621 is a prime.

It is a super-2 number, since 2×681796252 = 9296922530281250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68179621) 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, 272594 + ... + 272843.

It is an arithmetic number, because the mean of its divisors is an integer number (10636041).

Almost surely, 268179625 is an apocalyptic number.

It is an amenable number.

68179625 is a deficient number, since it is larger than the sum of its proper divisors (16908703).

68179625 is an equidigital number, since it uses as much as digits as its factorization.

68179625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545452 (or 545442 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 68179625 is about 8257.0954336256. The cubic root of 68179625 is about 408.5245899363.

The spelling of 68179625 in words is "sixty-eight million, one hundred seventy-nine thousand, six hundred twenty-five".

Divisors: 1 5 25 125 545437 2727185 13635925 68179625