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68240885 = 523593399
BaseRepresentation
bin1000001000101…
…00010111110101
311202101222220012
410010110113311
5114432202020
610434350005
71456016006
oct404242765
9152358805
1068240885
113557a429
121aa2b305
13111a3c2b
1490c51ad
155ece7c5
hex41145f5

68240885 has 8 divisors (see below), whose sum is σ = 85449600. Its totient is φ = 52219024.

The previous prime is 68240863. The next prime is 68240891. The reversal of 68240885 is 58804286.

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 68240885 - 28 = 68240629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296585 + ... + 296814.

It is an arithmetic number, because the mean of its divisors is an integer number (10681200).

Almost surely, 268240885 is an apocalyptic number.

It is an amenable number.

68240885 is a deficient number, since it is larger than the sum of its proper divisors (17208715).

68240885 is a wasteful number, since it uses less digits than its factorization.

68240885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593427.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 68240885 is about 8260.8041376128. The cubic root of 68240885 is about 408.6469076360.

The spelling of 68240885 in words is "sixty-eight million, two hundred forty thousand, eight hundred eighty-five".

Divisors: 1 5 23 115 593399 2966995 13648177 68240885