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67488081 = 360737061
BaseRepresentation
bin1000000010111…
…00100101010001
311200222202020120
410001130211101
5114234104311
610410300453
71446432153
oct401344521
9150882216
1067488081
1135105881
121a727729
1310c9c39b
148d6aad3
155dd1706
hex405c951

67488081 has 8 divisors (see below), whose sum is σ = 90134784. Its totient is φ = 44916720.

The previous prime is 67488073. The next prime is 67488097. The reversal of 67488081 is 18088476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67488081 - 23 = 67488073 is a prime.

It is a super-2 number, since 2×674880812 = 9109282154125122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67488781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16710 + ... + 20351.

It is an arithmetic number, because the mean of its divisors is an integer number (11266848).

Almost surely, 267488081 is an apocalyptic number.

It is an amenable number.

67488081 is a deficient number, since it is larger than the sum of its proper divisors (22646703).

67488081 is a wasteful number, since it uses less digits than its factorization.

67488081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37671.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 67488081 is about 8215.1129633134. The cubic root of 67488081 is about 407.1386757870.

The spelling of 67488081 in words is "sixty-seven million, four hundred eighty-eight thousand, eighty-one".

Divisors: 1 3 607 1821 37061 111183 22496027 67488081