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67080109 = 591136951
BaseRepresentation
bin1111111111100…
…0111110101101
311200020000121111
43333320332231
5114133030414
610353432021
71443112555
oct377707655
9150200544
1067080109
1134957308
121a56b611
1310b88795
148ca2165
155d508c4
hex3ff8fad

67080109 has 4 divisors (see below), whose sum is σ = 68217120. Its totient is φ = 65943100.

The previous prime is 67080107. The next prime is 67080131. The reversal of 67080109 is 90108076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67080109 - 21 = 67080107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67080107) 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, 568417 + ... + 568534.

It is an arithmetic number, because the mean of its divisors is an integer number (17054280).

Almost surely, 267080109 is an apocalyptic number.

It is an amenable number.

67080109 is a deficient number, since it is larger than the sum of its proper divisors (1137011).

67080109 is a wasteful number, since it uses less digits than its factorization.

67080109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137010.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 67080109 is about 8190.2447460378. The cubic root of 67080109 is about 406.3166194810.

The spelling of 67080109 in words is "sixty-seven million, eighty thousand, one hundred nine".

Divisors: 1 59 1136951 67080109