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80687375 = 53645499
BaseRepresentation
bin1001100111100…
…11000100001111
312121211100021022
410303303010033
5131123444000
612001224355
71666555106
oct463630417
9177740238
1080687375
114160068a
12230320bb
1313941212
14aa0503d
15713c585
hex4cf310f

80687375 has 8 divisors (see below), whose sum is σ = 100698000. Its totient is φ = 64549800.

The previous prime is 80687339. The next prime is 80687401. The reversal of 80687375 is 57378608.

It is not a de Polignac number, because 80687375 - 210 = 80686351 is a prime.

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, 322625 + ... + 322874.

It is an arithmetic number, because the mean of its divisors is an integer number (12587250).

Almost surely, 280687375 is an apocalyptic number.

80687375 is a deficient number, since it is larger than the sum of its proper divisors (20010625).

80687375 is an equidigital number, since it uses as much as digits as its factorization.

80687375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645514 (or 645504 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 80687375 is about 8982.6151537289. The cubic root of 80687375 is about 432.1175074003.

The spelling of 80687375 in words is "eighty million, six hundred eighty-seven thousand, three hundred seventy-five".

Divisors: 1 5 25 125 645499 3227495 16137475 80687375