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68079469 = 145146919
BaseRepresentation
bin1000000111011…
…00111101101101
311202002210110211
410003230331231
5114412020334
610431102421
71454444263
oct403547555
9152083424
1068079469
113547a127
121a971a11
1311148613
149082433
155e9ba64
hex40ecf6d

68079469 has 4 divisors (see below), whose sum is σ = 68127840. Its totient is φ = 68031100.

The previous prime is 68079463. The next prime is 68079497. The reversal of 68079469 is 96497086.

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 68079469 - 211 = 68077421 is a prime.

It is a super-2 number, since 2×680794692 = 9269628198643922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68079463) 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, 22009 + ... + 24910.

It is an arithmetic number, because the mean of its divisors is an integer number (17031960).

Almost surely, 268079469 is an apocalyptic number.

It is an amenable number.

68079469 is a deficient number, since it is larger than the sum of its proper divisors (48371).

68079469 is a wasteful number, since it uses less digits than its factorization.

68079469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48370.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 68079469 is about 8251.0283601500. The cubic root of 68079469 is about 408.3244507670.

The spelling of 68079469 in words is "sixty-eight million, seventy-nine thousand, four hundred sixty-nine".

Divisors: 1 1451 46919 68079469