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67742099 = 319532293
BaseRepresentation
bin1000000100110…
…10100110010011
311201110122200122
410002122212103
5114320221344
610415540455
71451540555
oct402324623
9151418618
1067742099
1135269707
121a82a72b
131105aba9
148dd54d5
155e31aee
hex409a993

67742099 has 8 divisors (see below), whose sum is σ = 70031232. Its totient is φ = 65459520.

The previous prime is 67742069. The next prime is 67742113. The reversal of 67742099 is 99024776.

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

It is a cyclic number.

It is not a de Polignac number, because 67742099 - 212 = 67738003 is a prime.

It is a super-3 number, since 3×677420993 (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (67742069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28397 + ... + 30689.

It is an arithmetic number, because the mean of its divisors is an integer number (8753904).

Almost surely, 267742099 is an apocalyptic number.

67742099 is a deficient number, since it is larger than the sum of its proper divisors (2289133).

67742099 is a wasteful number, since it uses less digits than its factorization.

67742099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 67742099 is about 8230.5588510137. The cubic root of 67742099 is about 407.6488452203.

The spelling of 67742099 in words is "sixty-seven million, seven hundred forty-two thousand, ninety-nine".

Divisors: 1 31 953 2293 29543 71083 2185229 67742099