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68500785 = 3523198553
BaseRepresentation
bin1000001010100…
…11110100110001
311202220012102010
410011103310301
5120014011120
610444113133
71461150513
oct405236461
9152805363
1068500785
1135737721
121ab357a9
1311265312
149151bb3
1560317e0
hex4153d31

68500785 has 16 divisors (see below), whose sum is σ = 114367104. Its totient is φ = 34945152.

The previous prime is 68500777. The next prime is 68500799. The reversal of 68500785 is 58700586.

It is a happy number.

It is not a de Polignac number, because 68500785 - 23 = 68500777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98932 + ... + 99621.

It is an arithmetic number, because the mean of its divisors is an integer number (7147944).

Almost surely, 268500785 is an apocalyptic number.

It is an amenable number.

68500785 is a deficient number, since it is larger than the sum of its proper divisors (45866319).

68500785 is a wasteful number, since it uses less digits than its factorization.

68500785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198584.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 68500785 is about 8276.5201020719. The cubic root of 68500785 is about 409.1650368253.

The spelling of 68500785 in words is "sixty-eight million, five hundred thousand, seven hundred eighty-five".

Divisors: 1 3 5 15 23 69 115 345 198553 595659 992765 2978295 4566719 13700157 22833595 68500785