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66050680 = 2351651267
BaseRepresentation
bin1111101111110…
…1101001111000
311121021201111111
43323331221320
5113402110210
610315410104
71431264403
oct373755170
9147251444
1066050680
1134313943
121a153934
13108b8057
148ab4d3a
155bea88a
hex3efda78

66050680 has 16 divisors (see below), whose sum is σ = 148614120. Its totient is φ = 26420256.

The previous prime is 66050659. The next prime is 66050681. The reversal of 66050680 is 8605066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66050681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825594 + ... + 825673.

Almost surely, 266050680 is an apocalyptic number.

It is an amenable number.

66050680 is an abundant number, since it is smaller than the sum of its proper divisors (82563440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66050680 is a wasteful number, since it uses less digits than its factorization.

66050680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651278 (or 1651274 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 66050680 is about 8127.1569444671. The cubic root of 66050680 is about 404.2274150135.

The spelling of 66050680 in words is "sixty-six million, fifty thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1651267 3302534 6605068 8256335 13210136 16512670 33025340 66050680