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68476018 = 21329197461
BaseRepresentation
bin1000001010011…
…01110001110010
311202211221102211
410011031301302
5120012213033
610443402334
71461015352
oct405156162
9152757384
1068476018
1135720056
121ab233aa
1311256c70
149146b62
1560292cd
hex414dc72

68476018 has 32 divisors (see below), whose sum is σ = 115259760. Its totient is φ = 30293760.

The previous prime is 68476013. The next prime is 68476073. The reversal of 68476018 is 81067486.

It can be written as a sum of positive squares in 8 ways, for example, as 37417689 + 31058329 = 6117^2 + 5573^2 .

It is a super-2 number, since 2×684760182 = 9377930082272648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68476013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148308 + ... + 148768.

Almost surely, 268476018 is an apocalyptic number.

68476018 is a deficient number, since it is larger than the sum of its proper divisors (46783742).

68476018 is a wasteful number, since it uses less digits than its factorization.

68476018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 68476018 is about 8275.0237461895. The cubic root of 68476018 is about 409.1157185971.

The spelling of 68476018 in words is "sixty-eight million, four hundred seventy-six thousand, eighteen".