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69707243 = 531315231
BaseRepresentation
bin1000010011110…
…10010111101011
311212011111100202
410021322113223
5120321112433
610530022415
71504334054
oct411722753
9155144322
1069707243
11363910a1
121b417a0b
13115984b8
14938772b
1561bdee8
hex427a5eb

69707243 has 4 divisors (see below), whose sum is σ = 71022528. Its totient is φ = 68391960.

The previous prime is 69707237. The next prime is 69707299. The reversal of 69707243 is 34270796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69707243 - 26 = 69707179 is a prime.

It is a super-3 number, since 3×697072433 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69707197 and 69707206.

It is not an unprimeable number, because it can be changed into a prime (69707233) 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, 657563 + ... + 657668.

It is an arithmetic number, because the mean of its divisors is an integer number (17755632).

Almost surely, 269707243 is an apocalyptic number.

69707243 is a deficient number, since it is larger than the sum of its proper divisors (1315285).

69707243 is a wasteful number, since it uses less digits than its factorization.

69707243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315284.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 69707243 is about 8349.0863572010. The cubic root of 69707243 is about 411.5531866251.

The spelling of 69707243 in words is "sixty-nine million, seven hundred seven thousand, two hundred forty-three".

Divisors: 1 53 1315231 69707243