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68585753 = 371853669
BaseRepresentation
bin1000001011010…
…00100100011001
311210001111222002
410011220210121
5120024221003
610450010345
71461653315
oct405504431
9153044862
1068585753
1135795545
121ab769b5
1311294bb2
149174b45
15604ba88
hex4168919

68585753 has 4 divisors (see below), whose sum is σ = 70439460. Its totient is φ = 66732048.

The previous prime is 68585749. The next prime is 68585771. The reversal of 68585753 is 35758586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35758586 = 217879293.

It can be written as a sum of positive squares in 2 ways, for example, as 26491609 + 42094144 = 5147^2 + 6488^2 .

It is a cyclic number.

It is not a de Polignac number, because 68585753 - 22 = 68585749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68585698 and 68585707.

It is not an unprimeable number, because it can be changed into a prime (68585053) 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, 926798 + ... + 926871.

It is an arithmetic number, because the mean of its divisors is an integer number (17609865).

Almost surely, 268585753 is an apocalyptic number.

It is an amenable number.

68585753 is a deficient number, since it is larger than the sum of its proper divisors (1853707).

68585753 is a wasteful number, since it uses less digits than its factorization.

68585753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853706.

The product of its digits is 1008000, while the sum is 47.

The square root of 68585753 is about 8281.6515864893. The cubic root of 68585753 is about 409.3341422852.

The spelling of 68585753 in words is "sixty-eight million, five hundred eighty-five thousand, seven hundred fifty-three".

Divisors: 1 37 1853669 68585753