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68681695 = 5107128377
BaseRepresentation
bin1000001011111…
…11111111011111
311210020101120111
410011333333133
5120040303240
610452030451
71462533115
oct405777737
9153211514
1068681695
1135850635
121b002427
13112c9774
14919bab5
15606a1ea
hex417ffdf

68681695 has 8 divisors (see below), whose sum is σ = 83188944. Its totient is φ = 54431424.

The previous prime is 68681689. The next prime is 68681719. The reversal of 68681695 is 59618686.

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 68681695 - 23 = 68681687 is a prime.

It is a Duffinian 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, 63654 + ... + 64723.

It is an arithmetic number, because the mean of its divisors is an integer number (10398618).

Almost surely, 268681695 is an apocalyptic number.

68681695 is a deficient number, since it is larger than the sum of its proper divisors (14507249).

68681695 is a wasteful number, since it uses less digits than its factorization.

68681695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128489.

The product of its digits is 622080, while the sum is 49.

The square root of 68681695 is about 8287.4420058303. The cubic root of 68681695 is about 409.5249206738.

The spelling of 68681695 in words is "sixty-eight million, six hundred eighty-one thousand, six hundred ninety-five".

Divisors: 1 5 107 535 128377 641885 13736339 68681695