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68969023 = 280124623
BaseRepresentation
bin1000001110001…
…10001000111111
311210202222201021
410013012020333
5120124002043
610502125011
71465140604
oct407061077
9153688637
1068969023
1135a274a2
121b120767
131139a496
1492346ab
1560c53ed
hex41c623f

68969023 has 4 divisors (see below), whose sum is σ = 68996448. Its totient is φ = 68941600.

The previous prime is 68969009. The next prime is 68969029. The reversal of 68969023 is 32096986.

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 68969023 - 29 = 68968511 is a prime.

It is a super-3 number, since 3×689690233 (a number of 24 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (68969029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9511 + ... + 15112.

It is an arithmetic number, because the mean of its divisors is an integer number (17249112).

Almost surely, 268969023 is an apocalyptic number.

68969023 is a deficient number, since it is larger than the sum of its proper divisors (27425).

68969023 is a wasteful number, since it uses less digits than its factorization.

68969023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27424.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 68969023 is about 8304.7590573117. The cubic root of 68969023 is about 410.0952049384.

The spelling of 68969023 in words is "sixty-eight million, nine hundred sixty-nine thousand, twenty-three".

Divisors: 1 2801 24623 68969023