Base | Representation |
---|---|
bin | 1111110111110… |
… | …1111001100100 |
3 | 11122021102001202 |
4 | 3331331321210 |
5 | 114020412342 |
6 | 10334542032 |
7 | 1435613021 |
oct | 375757144 |
9 | 148242052 |
10 | 66575972 |
11 | 34642571 |
12 | 1a367918 |
13 | 10a40188 |
14 | 8bb0548 |
15 | 5ca1332 |
hex | 3f7de64 |
66575972 has 24 divisors (see below), whose sum is σ = 121175040. Its totient is φ = 31970880.
The previous prime is 66575969. The next prime is 66575983. The reversal of 66575972 is 27957566.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15029 + ... + 18947.
It is an arithmetic number, because the mean of its divisors is an integer number (5048960).
Almost surely, 266575972 is an apocalyptic number.
66575972 is a gapful number since it is divisible by the number (62) formed by its first and last digit.
It is an amenable number.
66575972 is a deficient number, since it is larger than the sum of its proper divisors (54599068).
66575972 is a wasteful number, since it uses less digits than its factorization.
66575972 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4091 (or 4089 counting only the distinct ones).
The product of its digits is 793800, while the sum is 47.
The square root of 66575972 is about 8159.4100276920. The cubic root of 66575972 is about 405.2961751655.
The spelling of 66575972 in words is "sixty-six million, five hundred seventy-five thousand, nine hundred seventy-two".
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