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80688673 = 1311235527
BaseRepresentation
bin1001100111100…
…11011000100001
312121211102001101
410303303120201
5131124014143
612001234401
71666561642
oct463633041
9177742041
1080688673
114160165a
1223032a01
13139419a0
14aa056c9
15713cb4d
hex4cf3621

80688673 has 8 divisors (see below), whose sum is σ = 86988608. Its totient is φ = 74402064.

The previous prime is 80688653. The next prime is 80688679. The reversal of 80688673 is 37688608.

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 80688673 - 221 = 78591521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80688679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11836 + ... + 17362.

It is an arithmetic number, because the mean of its divisors is an integer number (10873576).

Almost surely, 280688673 is an apocalyptic number.

It is an amenable number.

80688673 is a deficient number, since it is larger than the sum of its proper divisors (6299935).

80688673 is a wasteful number, since it uses less digits than its factorization.

80688673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 80688673 is about 8982.6874041124. The cubic root of 80688673 is about 432.1198245142.

The spelling of 80688673 in words is "eighty million, six hundred eighty-eight thousand, six hundred seventy-three".

Divisors: 1 13 1123 5527 14599 71851 6206821 80688673