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68487523 = 137174201
BaseRepresentation
bin1000001010100…
…00100101100011
311202212112012221
410011100211203
5120013100043
610443531511
71461064036
oct405204543
9152775187
1068487523
1135728765
121ab29b97
131125c280
14914b01d
15602c8ed
hex4150963

68487523 has 8 divisors (see below), whose sum is σ = 74795616. Its totient is φ = 62328000.

The previous prime is 68487521. The next prime is 68487539. The reversal of 68487523 is 32578486.

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 68487523 - 21 = 68487521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68487523.

It is not an unprimeable number, because it can be changed into a prime (68487521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36178 + ... + 38023.

It is an arithmetic number, because the mean of its divisors is an integer number (9349452).

Almost surely, 268487523 is an apocalyptic number.

68487523 is a deficient number, since it is larger than the sum of its proper divisors (6308093).

68487523 is a wasteful number, since it uses less digits than its factorization.

68487523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74285.

The product of its digits is 322560, while the sum is 43.

The square root of 68487523 is about 8275.7188811607. The cubic root of 68487523 is about 409.1386298435.

The spelling of 68487523 in words is "sixty-eight million, four hundred eighty-seven thousand, five hundred twenty-three".

Divisors: 1 13 71 923 74201 964613 5268271 68487523