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68115351 = 3237313523
BaseRepresentation
bin1000000111101…
…01101110010111
311202011121200210
410003311232113
5114414142401
610431540503
71454654013
oct403655627
9152147623
1068115351
11354a4087
121a98a733
131115ba55
149091543
155ea74d6
hex40f5b97

68115351 has 16 divisors (see below), whose sum is σ = 96074496. Its totient is φ = 42837696.

The previous prime is 68115347. The next prime is 68115353. The reversal of 68115351 is 15351186.

It is not a de Polignac number, because 68115351 - 22 = 68115347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68115353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725 + ... + 11798.

It is an arithmetic number, because the mean of its divisors is an integer number (6004656).

Almost surely, 268115351 is an apocalyptic number.

68115351 is a deficient number, since it is larger than the sum of its proper divisors (27959145).

68115351 is a wasteful number, since it uses less digits than its factorization.

68115351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13622.

The product of its digits is 3600, while the sum is 30.

The square root of 68115351 is about 8253.2024693449. The cubic root of 68115351 is about 408.3961753992.

The spelling of 68115351 in words is "sixty-eight million, one hundred fifteen thousand, three hundred fifty-one".

Divisors: 1 3 23 69 73 219 1679 5037 13523 40569 311029 933087 987179 2961537 22705117 68115351