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68506716 = 2235708893
BaseRepresentation
bin1000001010101…
…01010001011100
311202220111112210
410011111101130
5120014203331
610444200420
71461204015
oct405252134
9152814483
1068506716
1135741123
121ab39110
1311267c25
14915400c
156033446
hex415545c

68506716 has 12 divisors (see below), whose sum is σ = 159849032. Its totient is φ = 22835568.

The previous prime is 68506699. The next prime is 68506733. The reversal of 68506716 is 61760586.

It is an interprime number because it is at equal distance from previous prime (68506699) and next prime (68506733).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854435 + ... + 2854458.

Almost surely, 268506716 is an apocalyptic number.

It is an amenable number.

68506716 is an abundant number, since it is smaller than the sum of its proper divisors (91342316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68506716 is a wasteful number, since it uses less digits than its factorization.

68506716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708900 (or 5708898 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 68506716 is about 8276.8783970770. The cubic root of 68506716 is about 409.1768453897.

The spelling of 68506716 in words is "sixty-eight million, five hundred six thousand, seven hundred sixteen".

Divisors: 1 2 3 4 6 12 5708893 11417786 17126679 22835572 34253358 68506716