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66740732 = 2282120323
BaseRepresentation
bin1111111010011…
…0000111111100
311122120210001222
43332212013330
5114041200412
610342252512
71440200252
oct376460774
9148523058
1066740732
1134745333
121a427138
1310a9a176
148c145d2
155cd5072
hex3fa61fc

66740732 has 12 divisors (see below), whose sum is σ = 116944296. Its totient is φ = 33328080.

The previous prime is 66740719. The next prime is 66740747. The reversal of 66740732 is 23704766.

It is a junction number, because it is equal to n+sod(n) for n = 66740692 and 66740701.

It is a congruent number.

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, 6878 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (9745358).

Almost surely, 266740732 is an apocalyptic number.

It is an amenable number.

66740732 is a deficient number, since it is larger than the sum of its proper divisors (50203564).

66740732 is a wasteful number, since it uses less digits than its factorization.

66740732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21148 (or 21146 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 66740732 is about 8169.5001071057. The cubic root of 66740732 is about 405.6302375703.

The spelling of 66740732 in words is "sixty-six million, seven hundred forty thousand, seven hundred thirty-two".

Divisors: 1 2 4 821 1642 3284 20323 40646 81292 16685183 33370366 66740732