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67764016 = 2431136621
BaseRepresentation
bin1000000100111…
…11111100110000
311201111202202101
410002133330300
5114321422031
610420230144
71451661505
oct402377460
9151452671
1067764016
1135284121
121a83b354
1311067b68
148ddd4ac
155e38361
hex409ff30

67764016 has 20 divisors (see below), whose sum is σ = 135529024. Its totient is φ = 32788800.

The previous prime is 67763999. The next prime is 67764017. The reversal of 67764016 is 61046776.

67764016 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (67764017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67815 + ... + 68806.

Almost surely, 267764016 is an apocalyptic number.

It is an amenable number.

67764016 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

67764016 is a wasteful number, since it uses less digits than its factorization.

67764016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136660 (or 136654 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 67764016 is about 8231.8901839128. The cubic root of 67764016 is about 407.6928034900.

The spelling of 67764016 in words is "sixty-seven million, seven hundred sixty-four thousand, sixteen".

Divisors: 1 2 4 8 16 31 62 124 248 496 136621 273242 546484 1092968 2185936 4235251 8470502 16941004 33882008 67764016