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66516392 = 239785717
BaseRepresentation
bin1111110110111…
…1010110101000
311122011101100002
43331233112220
5114012011032
610333402132
71435244225
oct375572650
9148141302
1066516392
1134601828
121a339348
1310a1c017
148b9694c
155c8d862
hex3f6f5a8

66516392 has 16 divisors (see below), whose sum is σ = 126005460. Its totient is φ = 32914944.

The previous prime is 66516389. The next prime is 66516407. The reversal of 66516392 is 29361566.

It can be written as a sum of positive squares in 2 ways, for example, as 64224196 + 2292196 = 8014^2 + 1514^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42083 + ... + 43634.

Almost surely, 266516392 is an apocalyptic number.

It is an amenable number.

66516392 is a deficient number, since it is larger than the sum of its proper divisors (59489068).

66516392 is a wasteful number, since it uses less digits than its factorization.

66516392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85820 (or 85816 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The square root of 66516392 is about 8155.7582112272. The cubic root of 66516392 is about 405.1752368733.

The spelling of 66516392 in words is "sixty-six million, five hundred sixteen thousand, three hundred ninety-two".

Divisors: 1 2 4 8 97 194 388 776 85717 171434 342868 685736 8314549 16629098 33258196 66516392