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679145311 = 132343101523
BaseRepresentation
bin101000011110101…
…110111101011111
31202022221011020001
4220132232331133
52342330122221
6151220235131
722554432325
oct5036567537
91668834201
10679145311
113193a5a19
1216b53baa7
13aa919c40
14662a9d15
153e953391
hex287aef5f

679145311 has 32 divisors (see below), whose sum is σ = 790175232. Its totient is φ = 578793600.

The previous prime is 679145309. The next prime is 679145333. The reversal of 679145311 is 113541976.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 679145311 - 21 = 679145309 is a prime.

It is a super-2 number, since 2×6791453112 = 922476706906573442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679145351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1298296 + ... + 1298818.

It is an arithmetic number, because the mean of its divisors is an integer number (24692976).

Almost surely, 2679145311 is an apocalyptic number.

679145311 is a deficient number, since it is larger than the sum of its proper divisors (111029921).

679145311 is a wasteful number, since it uses less digits than its factorization.

679145311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 22680, while the sum is 37.

The square root of 679145311 is about 26060.4165546140. The cubic root of 679145311 is about 878.9973562459.

The spelling of 679145311 in words is "six hundred seventy-nine million, one hundred forty-five thousand, three hundred eleven".

Divisors: 1 13 23 43 101 299 523 559 989 1313 2323 4343 6799 12029 12857 22489 30199 52823 56459 99889 156377 292357 517247 686699 1214929 1298557 2271389 6724211 15794077 29528057 52241947 679145311