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BaseRepresentation
bin1111110000000…
…1011010010000
311121022111121021
43330001122100
5113403103224
610320005224
71431360301
oct374013220
9147274537
1066066064
1134324459
121a160814
13108c205c
148aba7a8
155c001e4
hex3f01690

66066064 has 10 divisors (see below), whose sum is σ = 128003030. Its totient is φ = 33033024.

The previous prime is 66066043. The next prime is 66066073. The reversal of 66066064 is 46066066.

It can be written as a sum of positive squares in only one way, i.e., 54641664 + 11424400 = 7392^2 + 3380^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2064549 + ... + 2064580.

It is an arithmetic number, because the mean of its divisors is an integer number (12800303).

Almost surely, 266066064 is an apocalyptic number.

It is an amenable number.

66066064 is a deficient number, since it is larger than the sum of its proper divisors (61936966).

66066064 is a wasteful number, since it uses less digits than its factorization.

66066064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129137 (or 4129131 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 66066064 is about 8128.1033457997. The cubic root of 66066064 is about 404.2587957241.

The spelling of 66066064 in words is "sixty-six million, sixty-six thousand, sixty-four", and thus it is an eban number.